diff --git a/.eslintrc b/.eslintrc
index 8c3380c..4f70013 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -12,6 +12,8 @@
     "no-underscore-dangle": 0,
     "no-param-reassign": 0,
     "react/prefer-stateless-function": 1,
+    "react/prop-types": 1, // FIXME: refactor
+    "class-methods-use-this": 1, // FIXME: refactor
     "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
     "react/sort-comp": 0,
     "max-len": 0,
diff --git a/android/fastlane/metadata/android/en-US/images/icon.png b/android/fastlane/metadata/android/en-US/images/icon.png
index e186674..fe8f0c5 100644
Binary files a/android/fastlane/metadata/android/en-US/images/icon.png and b/android/fastlane/metadata/android/en-US/images/icon.png differ
diff --git a/android/fastlane/metadata/android/no-NO/images/icon.png b/android/fastlane/metadata/android/no-NO/images/icon.png
index e186674..fe8f0c5 100644
Binary files a/android/fastlane/metadata/android/no-NO/images/icon.png and b/android/fastlane/metadata/android/no-NO/images/icon.png differ
diff --git a/src/App.js b/src/App.js
index 4e3b4e3..25bfb95 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,4 +1,4 @@
-import React, { Component } from 'react';
+import React from 'react';
 import { Provider } from 'react-redux';
 import { PersistGate } from 'redux-persist/es/integration/react';
 import Config from 'react-native-config';
@@ -15,16 +15,14 @@ const apolloClient = new ApolloClient({
   cache: new InMemoryCache(),
 });
 
-export default class App extends Component {
-  render() {
-    return (
-      <Provider store={store}>
-        <PersistGate loading={null} persistor={persistor}>
-          <ApolloProvider client={apolloClient}>
-            <Dusken />
-          </ApolloProvider>
-        </PersistGate>
-      </Provider>
-    );
-  }
+export default function App() {
+  return (
+    <Provider store={store}>
+      <PersistGate loading={null} persistor={persistor}>
+        <ApolloProvider client={apolloClient}>
+          <Dusken />
+        </ApolloProvider>
+      </PersistGate>
+    </Provider>
+  );
 }
diff --git a/src/Dusken.js b/src/Dusken.js
index 7744392..d6e666b 100644
--- a/src/Dusken.js
+++ b/src/Dusken.js
@@ -1,16 +1,12 @@
-import React, { Component } from 'react';
+import React from 'react';
 import { connect } from 'react-redux';
 import { Root } from 'native-base';
 import DuskenNavigation from './navigation';
 
-class DuskenContainer extends Component {
-  render() {
-    return (
-      <Root>
-        <DuskenNavigation />
-      </Root>
-    );
-  }
-}
+const DuskenContainer = () => (
+  <Root>
+    <DuskenNavigation />
+  </Root>
+);
 
 export default connect()(DuskenContainer);
diff --git a/src/api.js b/src/api.js
index dd96f18..bd1c621 100644
--- a/src/api.js
+++ b/src/api.js
@@ -51,7 +51,7 @@ export function requestLogin(username, password) {
   };
 }
 
-export function requestUserData(auth_token) {
+export function requestUserData(authToken) {
   return (dispatch) => {
     // We are now fetching user data
     dispatch(userDataRequest());
@@ -61,7 +61,7 @@ export function requestUserData(auth_token) {
       headers: {
         Accept: 'application/json',
         'Content-Type': 'application/json',
-        Authorization: `Token ${auth_token}`,
+        Authorization: `Token ${authToken}`,
       },
     })
       .then((response) => response.json().then((json) => ({ json, response })))
@@ -118,7 +118,7 @@ export function requestRegisterUser(firstName, lastName, email, phoneNumber, pas
   };
 }
 
-export function requestMembershipCharge(auth_token, stripe_token, membership_type) {
+export function requestMembershipCharge(authToken, stripeToken, membershipType) {
   return (dispatch) => {
     dispatch(membershipChargeRequest());
 
@@ -127,11 +127,11 @@ export function requestMembershipCharge(auth_token, stripe_token, membership_typ
       headers: {
         Accept: 'application/json',
         'Content-Type': 'application/json',
-        Authorization: `Token ${auth_token}`,
+        Authorization: `Token ${authToken}`,
       },
       body: JSON.stringify({
-        stripe_token,
-        membership_type,
+        stripe_token: stripeToken,
+        membership_type: membershipType,
         payment_method: 'app',
       }),
     })
diff --git a/src/modules/about/About.js b/src/modules/about/About.js
index 3fcb7cd..8999579 100644
--- a/src/modules/about/About.js
+++ b/src/modules/about/About.js
@@ -1,6 +1,6 @@
 import React, { Component } from 'react';
-import { Text, ScrollView, View, Platform, StyleSheet, Image, Linking, TouchableOpacity } from 'react-native';
-// import HTMLView from 'react-native-htmlview';
+import { Text, View, Platform, StyleSheet, Image, Linking, TouchableOpacity } from 'react-native';
+import { ScrollView } from 'react-navigation';
 
 import { Button, Text as NBText, Icon } from 'native-base';
 import theme from '../../theme';
@@ -140,8 +140,6 @@ export default class About extends Component {
             Alle studentforeninger i Oslo kan arrangere gratis på Chateau Neuf. Skal du arrangere en fest, sette en
             konsert, holde et foredrag eller gjennomføre et møte, har vi lokaler som kan brukes til dette.
           </Text>
-
-          {/* <HTMLView style={styles.content} stylesheet={HTMLStyles} value={this.props.openingHours}/> */}
         </View>
       </ScrollView>
     );
diff --git a/src/modules/about/AboutContainer.js b/src/modules/about/AboutContainer.js
index dd811ce..47c8b7c 100644
--- a/src/modules/about/AboutContainer.js
+++ b/src/modules/about/AboutContainer.js
@@ -1,12 +1,7 @@
-import { connect } from 'react-redux';
-import React, { Component } from 'react';
+import React from 'react';
 
 import About from './About';
 
-class AboutContainer extends Component {
-  render() {
-    return <About {...this.state} />;
-  }
-}
+const AboutContainer = () => <About />;
 
-export default connect()(AboutContainer);
+export default AboutContainer;
diff --git a/src/modules/events/EventDetail.js b/src/modules/events/EventDetail.js
index 9426020..1fed83c 100644
--- a/src/modules/events/EventDetail.js
+++ b/src/modules/events/EventDetail.js
@@ -3,6 +3,7 @@ import { Linking, StyleSheet, ScrollView, Text, Platform, View, Image, Touchable
 import HTMLView from 'react-native-htmlview';
 import moment from 'moment';
 import { Icon } from 'native-base';
+
 import theme from '../../theme';
 
 moment.locale('nb');
@@ -44,8 +45,8 @@ export default class EventDetail extends Component {
   _formatTicketText() {
     /* FIXME: This should be handled by API */
     const { item } = this.props;
-    let reg_kr = '';
-    let mem_kr = '';
+    let regularPrice = '';
+    let memberPrice = '';
     if (item.price_regular === '0') {
       item.price_regular = 'Gratis';
     }
@@ -53,19 +54,19 @@ export default class EventDetail extends Component {
       item.price_member = 'Gratis';
     }
     if (item.price_regular !== 'Gratis') {
-      reg_kr = ' kr';
+      regularPrice = ' kr';
     }
     if (item.price_member !== 'Gratis') {
-      mem_kr = ' kr';
+      memberPrice = ' kr';
     }
 
     let text = '';
     if (item.price_regular && item.price_member) {
-      text = `Pris: ${item.price_regular}${reg_kr} / Medlemmer: ${item.price_member}${mem_kr}`;
+      text = `Pris: ${item.price_regular}${regularPrice} / Medlemmer: ${item.price_member}${memberPrice}`;
     } else if (item.price_regular) {
-      text = `Pris: ${item.price_regular}${reg_kr}`;
+      text = `Pris: ${item.price_regular}${regularPrice}`;
     } else if (item.price_member) {
-      text = `Pris (Medlemmer): ${item.price_member}${mem_kr}`;
+      text = `Pris (Medlemmer): ${item.price_member}${memberPrice}`;
     } else {
       return '';
     }
@@ -108,7 +109,7 @@ export default class EventDetail extends Component {
     const text = this._formatTicketText();
 
     if (text === '') {
-      return;
+      return null;
     }
 
     if (item.ticket_url) {
@@ -141,7 +142,7 @@ export default class EventDetail extends Component {
   showFacebutton() {
     const { item } = this.props;
     if (!item.facebook_url) {
-      return;
+      return null;
     }
 
     return (
@@ -162,6 +163,8 @@ export default class EventDetail extends Component {
     if (item.thumbnail.medium_large) {
       return <Image source={{ uri: item.thumbnail.medium_large }} style={styles.image} />;
     }
+
+    return null;
   }
 
   showYear() {
@@ -170,6 +173,8 @@ export default class EventDetail extends Component {
     if (moment().year() !== moment(item.start_time).year()) {
       return <Text style={styles.year}>{this._formatYear(item.start_time)}</Text>;
     }
+
+    return null;
   }
 
   render() {
diff --git a/src/modules/events/EventList.js b/src/modules/events/EventList.js
index 57cd24c..fa5a307 100644
--- a/src/modules/events/EventList.js
+++ b/src/modules/events/EventList.js
@@ -1,6 +1,6 @@
 import { StyleSheet, View, Platform } from 'react-native';
 import { SectionList } from 'react-navigation';
-import { Card, ListItem, CardItem, Body, Text, Left, Right, Icon, Button, Content, Spinner } from 'native-base';
+import { Card, ListItem, CardItem, Body, Text, Right, Icon, Button, Content, Spinner } from 'native-base';
 import React, { Component } from 'react';
 import moment from 'moment';
 import 'moment/locale/nb';
@@ -64,11 +64,7 @@ export default class EventList extends Component {
       return (
         <Content>
           <Card style={{ margin: 4 }}>
-            <CardItem
-              onPress={() => {
-                this._onPressItem(item);
-              }}
-            >
+            <CardItem>
               <Text style={styles.loadingText}>Kunne ikke hente programmet...</Text>
             </CardItem>
             <CardItem>
diff --git a/src/modules/events/EventListContainer.js b/src/modules/events/EventListContainer.js
index 680cc03..bad24d5 100644
--- a/src/modules/events/EventListContainer.js
+++ b/src/modules/events/EventListContainer.js
@@ -6,6 +6,7 @@ import moment from 'moment';
 import 'moment/locale/nb';
 
 import EventList from './EventList';
+import { fetchWithTimeout } from '../../utils';
 
 moment.locale('nb');
 
@@ -35,7 +36,7 @@ class EventListContainer extends Component {
 
   _toSectionFormat(events) {
     const sectioned = {};
-    events.map((event) => {
+    events.forEach((event) => {
       const title = this._formatDate(event.start_time);
       if (title in sectioned) {
         sectioned[title].push(event);
@@ -84,9 +85,9 @@ class EventListContainer extends Component {
     const url = `${Config.EVENT_API_URL}/wp-json/wp/v2/events?page=${page}&future=1`;
     this.setState({ loading: true });
 
-    fetch(url)
+    fetchWithTimeout(url)
       .then((res) => {
-        this.setState({ totalPages: parseInt(res.headers.get('x-wp-totalpages')) });
+        this.setState({ totalPages: parseInt(res.headers.get('x-wp-totalpages'), 10) });
         return res.json();
       })
       .then((res) => {
diff --git a/src/modules/login/Login.js b/src/modules/login/Login.js
index 0f945da..2888a42 100644
--- a/src/modules/login/Login.js
+++ b/src/modules/login/Login.js
@@ -1,6 +1,6 @@
 import React, { Component } from 'react';
-import { Linking, StyleSheet, View, Platform } from 'react-native';
-import { Container, Header, Content, Form, Item, Input, Label, Spinner, Button, Text, Icon } from 'native-base';
+import { Linking, StyleSheet, View } from 'react-native';
+import { Container, Content, Form, Item, Input, Label, Spinner, Button, Text } from 'native-base';
 import Config from 'react-native-config';
 import theme from '../../theme';
 
@@ -26,7 +26,7 @@ export default class Login extends Component {
             returnKeyType="next"
             onChangeText={this.handleEmail}
             onSubmitEditing={() => {
-              this.refs.passwordInput._root.focus();
+              this.passwordInputRef._root.focus();
             }}
           />
         </Item>
@@ -44,7 +44,7 @@ export default class Login extends Component {
           returnKeyType="next"
           onChangeText={this.handleEmail}
           onSubmitEditing={() => {
-            this.refs.passwordInput._root.focus();
+            this.passwordInputRef._root.focus();
           }}
         />
       </Item>
@@ -57,7 +57,9 @@ export default class Login extends Component {
         <Item stackedLabel last error>
           <Label>Passord</Label>
           <Input
-            ref="passwordInput"
+            ref={(ref) => {
+              this.passwordInputRef = ref;
+            }}
             secureTextEntry={true}
             autoCapitalize="none"
             autoCorrect={false}
@@ -71,7 +73,9 @@ export default class Login extends Component {
       <Item stackedLabel last>
         <Label>Passord</Label>
         <Input
-          ref="passwordInput"
+          ref={(ref) => {
+            this.passwordInputRef = ref;
+          }}
           secureTextEntry={true}
           autoCapitalize="none"
           autoCorrect={false}
@@ -125,11 +129,7 @@ export default class Login extends Component {
     return <View style={styles.errorBox} />;
   };
 
-  showSpinner = () => {
-    if (this.props.isLoggingIn) {
-      return <Spinner color="#f58220" />;
-    }
-  };
+  showSpinner = () => (this.props.isLoggingIn ? <Spinner color="#f58220" /> : null);
 
   handleEmail = (text) => {
     this.setState({ email: text });
diff --git a/src/modules/membership/Proof.js b/src/modules/membership/Proof.js
index 03f7011..e42d4e3 100644
--- a/src/modules/membership/Proof.js
+++ b/src/modules/membership/Proof.js
@@ -44,7 +44,7 @@ export default class Proof extends Component {
 
   membershipValidTo() {
     if (!this.props.user.last_membership) {
-      return;
+      return null;
     }
 
     let validTo = this.props.user.last_membership.end_date;
@@ -63,7 +63,7 @@ export default class Proof extends Component {
   membershipStatus() {
     if (!this.props.user.is_member) {
       if (!this.props.user.last_membership) {
-        return;
+        return null;
       }
 
       return (
@@ -86,7 +86,7 @@ export default class Proof extends Component {
 
   purchaseButton() {
     if (this.props.user.is_member) {
-      return;
+      return null;
     }
 
     return (
@@ -108,15 +108,24 @@ export default class Proof extends Component {
   }
 
   confetti() {
-    if (this.props.user.is_member) {
-      // Confetti!!!!
-      return <Confetti ref={(node) => (this._confettiView = node)} confettiCount={Number.MAX_SAFE_INTEGER} />;
+    if (!this.props.user.is_member) {
+      return null;
     }
+
+    // Confetti!!!!
+    return (
+      <Confetti
+        ref={(node) => {
+          this._confettiView = node;
+        }}
+        confettiCount={Number.MAX_SAFE_INTEGER}
+      />
+    );
   }
 
   logo() {
     if (!this.props.user.is_member) {
-      return;
+      return null;
     }
 
     // FIXME: URL to config
@@ -133,7 +142,7 @@ export default class Proof extends Component {
 
   chargeError() {
     if (!this.props.chargeError) {
-      return;
+      return null;
     }
 
     return (
diff --git a/src/modules/membership/ProofContainer.js b/src/modules/membership/ProofContainer.js
index 06c722a..8ef56e2 100644
--- a/src/modules/membership/ProofContainer.js
+++ b/src/modules/membership/ProofContainer.js
@@ -62,7 +62,7 @@ class ProofContainer extends Component {
           membershipTypeSlug
         );
       },
-      (error) => {
+      () => {
         /* FIXME: Happens only if card dialog is canceled? */
       }
     );
diff --git a/src/modules/register/UserRegister.js b/src/modules/register/UserRegister.js
index 71babfb..42efe9f 100644
--- a/src/modules/register/UserRegister.js
+++ b/src/modules/register/UserRegister.js
@@ -1,7 +1,7 @@
 import React, { Component } from 'react';
-import { Container, Header, Content, Form, Item, Input, Label, Spinner, Button, Text, Icon, Toast } from 'native-base';
+import { Container, Content, Form, Item, Input, Label, Spinner, Button, Text, Icon, Toast } from 'native-base';
 import { StyleSheet, View } from 'react-native';
-import EmailValidator from 'email-validator';
+import * as EmailValidator from 'email-validator';
 
 import theme from '../../theme';
 
@@ -27,7 +27,7 @@ export default class UserRegister extends Component {
     const touched = new Set(this.state.touched).add(triggeredBy);
 
     /* No empty fields */
-    for (const key of fieldNames) {
+    fieldNames.forEach((key) => {
       const value = this.state[key];
       if (value === '') {
         errors[key] = 'kan ikke være tomt';
@@ -36,7 +36,7 @@ export default class UserRegister extends Component {
       } else {
         delete errors[key];
       }
-    }
+    });
 
     this.setState({ errors, touched });
   }
@@ -62,7 +62,7 @@ export default class UserRegister extends Component {
             });
           }}
           onSubmitEditing={() => {
-            this.refs.lastNameInput._root.focus();
+            this.lastNameInputRef._root.focus();
           }}
           value={this.state.firstName}
         />
@@ -76,7 +76,9 @@ export default class UserRegister extends Component {
       <Item error={this.fieldHasError('lastName')}>
         <Label>Etternavn</Label>
         <Input
-          ref="lastNameInput"
+          ref={(ref) => {
+            this.lastNameInputRef = ref;
+          }}
           returnKeyType="next"
           onChangeText={(lastName) => {
             this.setState({ lastName }, () => {
@@ -84,7 +86,7 @@ export default class UserRegister extends Component {
             });
           }}
           onSubmitEditing={() => {
-            this.refs.emailInput._root.focus();
+            this.emailInputRef._root.focus();
           }}
           value={this.state.lastName}
         />
@@ -98,7 +100,9 @@ export default class UserRegister extends Component {
       <Item error={this.fieldHasError('email')}>
         <Label>E-post</Label>
         <Input
-          ref="emailInput"
+          ref={(ref) => {
+            this.emailInputRef = ref;
+          }}
           keyboardType="email-address"
           autoCapitalize="none"
           autoCorrect={false}
@@ -109,7 +113,7 @@ export default class UserRegister extends Component {
             });
           }}
           onSubmitEditing={() => {
-            this.refs.phoneInput._root.focus();
+            this.phoneInputRef._root.focus();
           }}
           value={this.state.email}
         />
@@ -123,7 +127,9 @@ export default class UserRegister extends Component {
       <Item error={this.fieldHasError('phoneNumber')}>
         <Label>Mobilnummer</Label>
         <Input
-          ref="phoneInput"
+          ref={(ref) => {
+            this.phoneInputRef = ref;
+          }}
           returnKeyType="next"
           keyboardType="phone-pad"
           onChangeText={(phoneNumber) => {
@@ -132,7 +138,7 @@ export default class UserRegister extends Component {
             });
           }}
           onSubmitEditing={() => {
-            this.refs.passwordInput._root.focus();
+            this.passwordInputRef._root.focus();
           }}
           value={this.state.phoneNumber}
         />
@@ -146,7 +152,9 @@ export default class UserRegister extends Component {
       <Item error={this.fieldHasError('password')}>
         <Label>Passord</Label>
         <Input
-          ref="passwordInput"
+          ref={(ref) => {
+            this.passwordInputRef = ref;
+          }}
           secureTextEntry={true}
           autoCapitalize="none"
           autoCorrect={false}
@@ -195,7 +203,7 @@ export default class UserRegister extends Component {
 
   showFieldError = (field) => {
     if (!this.fieldHasError(field)) {
-      return;
+      return null;
     }
     return (
       <Item style={styles.errorText}>
@@ -205,9 +213,10 @@ export default class UserRegister extends Component {
   };
 
   showSpinner = () => {
-    if (this.props.isRegisteringUser) {
-      return <Spinner color="#f58220" />;
+    if (!this.props.isRegisteringUser) {
+      return null;
     }
+    return <Spinner color="#f58220" />;
   };
 
   render() {
diff --git a/src/navigation.js b/src/navigation.js
index e04782e..7184d39 100644
--- a/src/navigation.js
+++ b/src/navigation.js
@@ -62,11 +62,24 @@ const tabBarOptions = {
 
 const tabNav = createBottomTabNavigator(tabBarRoutes, tabBarOptions);
 
-const DuskenNavigation = createStackNavigator({
-  Root: tabNav,
-  Login: LoginScreen,
-  UserRegister: UserRegisterScreen,
-  EventDetail: EventDetailScreen,
-});
+const DuskenNavigation = createStackNavigator(
+  {
+    Root: tabNav,
+    Login: LoginScreen,
+    UserRegister: UserRegisterScreen,
+    EventDetail: EventDetailScreen,
+  },
+  {
+    defaultNavigationOptions: {
+      headerStyle: {
+        backgroundColor: '#f58220',
+      },
+      headerTitleStyle: {
+        color: 'white',
+      },
+      headerTintColor: 'white',
+    },
+  }
+);
 
 export default createAppContainer(DuskenNavigation);
diff --git a/src/reducers.js b/src/reducers.js
index aaf9731..31b17f2 100644
--- a/src/reducers.js
+++ b/src/reducers.js
@@ -33,9 +33,9 @@ const initialState = {
 
 function formatErrors(errs) {
   const _errs = {};
-  for (const [key, value] of Object.entries(errs)) {
+  Object.entries(errs).forEach(([key, value]) => {
     _errs[snakeToCamelCase(key)] = Array.isArray(value) ? value.join('\n') : value;
-  }
+  });
   return _errs;
 }
 
@@ -97,7 +97,9 @@ export default function duskenApp(state = initialState, action) {
       });
 
     case REGISTER_USER_SUCCESS:
+      // eslint-disable-next-line no-case-declarations
       const userData = action.data;
+      // eslint-disable-next-line no-case-declarations
       const token = action.data.auth_token;
       delete userData.auth_token;
 
diff --git a/src/screens/AboutScreen.js b/src/screens/AboutScreen.js
index 65a4be9..c6958c4 100644
--- a/src/screens/AboutScreen.js
+++ b/src/screens/AboutScreen.js
@@ -1,21 +1,21 @@
-import React, { Component } from 'react';
+import React from 'react';
 import Icon from 'react-native-vector-icons/SimpleLineIcons';
 import { StyleProvider } from 'native-base';
 
 import AboutContainer from '../modules/about/AboutContainer';
 import getTheme from '../../native-base-theme/components';
 
-export default class AboutScreen extends Component {
-  static navigationOptions = {
-    title: 'Om oss',
-    tabBarIcon: ({ tintColor }) => <Icon name="info" size={16} color={tintColor} style={{ marginTop: 5 }} />,
-  };
+const AboutScreen = () => (
+  <StyleProvider style={getTheme()}>
+    <AboutContainer />
+  </StyleProvider>
+);
 
-  render() {
-    return (
-      <StyleProvider style={getTheme()}>
-        <AboutContainer />
-      </StyleProvider>
-    );
-  }
-}
+const TabBarIcon = ({ tintColor }) => <Icon name="info" size={16} color={tintColor} style={{ marginTop: 5 }} />;
+
+AboutScreen.navigationOptions = {
+  title: 'Om oss',
+  tabBarIcon: TabBarIcon,
+};
+
+export default AboutScreen;
diff --git a/src/screens/EventDetailScreen.js b/src/screens/EventDetailScreen.js
index 3697aeb..267ae4d 100644
--- a/src/screens/EventDetailScreen.js
+++ b/src/screens/EventDetailScreen.js
@@ -1,26 +1,21 @@
-import React, { Component } from 'react';
+import React from 'react';
 import { StyleProvider } from 'native-base';
+import { useNavigationParam } from 'react-navigation-hooks/src/Hooks';
+
 import EventDetail from '../modules/events/EventDetail';
 import getTheme from '../../native-base-theme/components';
 
-export default class EventDetailScreen extends Component {
-  static navigationOptions = ({ navigation }) => ({
-    title: navigation.state.params.item.title.decoded,
-    headerStyle: {
-      backgroundColor: '#f58220',
-    },
-    headerTitleStyle: {
-      color: 'white',
-    },
-    headerTintColor: 'white',
-  });
+const EventDetailScreen = () => {
+  const item = useNavigationParam('item');
 
-  render() {
-    const { params } = this.props.navigation.state;
-    return (
-      <StyleProvider style={getTheme()}>
-        <EventDetail item={params.item} />
-      </StyleProvider>
-    );
-  }
-}
+  return (
+    <StyleProvider style={getTheme()}>
+      <EventDetail item={item} />
+    </StyleProvider>
+  );
+};
+EventDetailScreen.navigationOptions = ({ navigation }) => ({
+  title: navigation.state.params.item.title.decoded,
+});
+
+export default EventDetailScreen;
diff --git a/src/screens/EventListScreen.js b/src/screens/EventListScreen.js
index a911692..5f07d93 100644
--- a/src/screens/EventListScreen.js
+++ b/src/screens/EventListScreen.js
@@ -1,25 +1,27 @@
-import React, { Component } from 'react';
+import React from 'react';
 import Icon from 'react-native-vector-icons/SimpleLineIcons';
 import { StyleProvider } from 'native-base';
+import { useNavigation } from 'react-navigation-hooks';
 import EventListContainer from '../modules/events/EventListContainer';
 import getTheme from '../../native-base-theme/components';
 
-export default class EventsScreen extends Component {
-  static navigationOptions = {
-    title: 'Program',
-    tabBarIcon: ({ tintColor }) => <Icon name="event" size={16} color={tintColor} style={{ marginTop: 5 }} />,
-  };
+const EventsScreen = () => {
+  const { navigate } = useNavigation();
+  return (
+    <StyleProvider style={getTheme()}>
+      <EventListContainer
+        showEvent={(item) => {
+          navigate('EventDetail', { item });
+        }}
+      />
+    </StyleProvider>
+  );
+};
 
-  showEvent = (item) => {
-    const { navigate } = this.props.navigation;
-    navigate('EventDetail', { item });
-  };
+const tabBarIcon = ({ tintColor }) => <Icon name="event" size={16} color={tintColor} style={{ marginTop: 5 }} />;
 
-  render() {
-    return (
-      <StyleProvider style={getTheme()}>
-        <EventListContainer showEvent={this.showEvent} />
-      </StyleProvider>
-    );
-  }
-}
+EventsScreen.navigationOptions = {
+  title: 'Program',
+  tabBarIcon,
+};
+export default EventsScreen;
diff --git a/src/screens/LoginScreen.js b/src/screens/LoginScreen.js
index a12ba87..2aa43f8 100644
--- a/src/screens/LoginScreen.js
+++ b/src/screens/LoginScreen.js
@@ -1,30 +1,19 @@
-import React, { Component } from 'react';
+import React from 'react';
 import { StyleProvider } from 'native-base';
+import { useNavigation } from 'react-navigation-hooks';
 import LoginContainer from '../modules/login/LoginContainer';
 import getTheme from '../../native-base-theme/components';
 
-export default class LoginScreen extends Component {
-  static navigationOptions = {
-    title: 'Logg inn',
-    headerStyle: {
-      backgroundColor: '#f58220',
-    },
-    headerTitleStyle: {
-      color: 'white',
-    },
-    headerTintColor: 'white',
-  };
-
-  onLogin = () => {
-    // This works since LoginScreen is allways navigated to from MembershipScreen
-    this.props.navigation.goBack();
-  };
-
-  render() {
-    return (
-      <StyleProvider style={getTheme()}>
-        <LoginContainer onLogin={this.onLogin} />
-      </StyleProvider>
-    );
-  }
-}
+// navigation.goBack onLogin works since LoginScreen is allways navigated to from MembershipScreen
+const LoginScreen = () => {
+  const navigation = useNavigation();
+  return (
+    <StyleProvider style={getTheme()}>
+      <LoginContainer onLogin={navigation.goBack} />
+    </StyleProvider>
+  );
+};
+LoginScreen.navigationOptions = {
+  title: 'Logg inn',
+};
+export default LoginScreen;
diff --git a/src/screens/UserRegisterScreen.js b/src/screens/UserRegisterScreen.js
index 8cfc626..d63c0fa 100644
--- a/src/screens/UserRegisterScreen.js
+++ b/src/screens/UserRegisterScreen.js
@@ -6,13 +6,6 @@ import getTheme from '../../native-base-theme/components';
 export default class UserRegisterScreen extends Component {
   static navigationOptions = {
     title: 'Bli medlem',
-    headerStyle: {
-      backgroundColor: '#f58220',
-    },
-    headerTitleStyle: {
-      color: 'white',
-    },
-    headerTintColor: 'white',
   };
 
   onRegister = () => {
diff --git a/src/utils.js b/src/utils.js
index cd3930b..adb09b6 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,3 +1,4 @@
+/* global fetch */
 export function snakeToCamelCase(val) {
   return val.replace(/_([a-z])/g, function(g) {
     return g[1].toUpperCase();