diff --git a/pydusken/__init__.py b/pydusken/__init__.py
index 9df61ec..7a58e57 100644
--- a/pydusken/__init__.py
+++ b/pydusken/__init__.py
@@ -31,14 +31,14 @@ class DuskenApi(object):
             self.oauth2_access_token = self.get_access_token(username, password, scope='write')
             self.access_token = self.oauth2_access_token['access_token']
         except requests.exceptions.HTTPError as e:
-            logging.error("Could not authenticate with API. Correct client_id, client_secret, username and password?\n{}".format(e))
+            logging.error("Could not authenticate with API. Correct client_id, client_secret, username and password?\n{0}".format(e))
             return None
 
         return self.access_token
 
     def get_access_token(self, username, password, scope='read', grant_type='password'):
         resp = requests.post(
-            "{}/oauth2/access_token/".format(self.base_url),
+            "{0}/oauth2/access_token/".format(self.base_url),
             data=dict(
                 username=username,
                 password=password,
diff --git a/pydusken/members.py b/pydusken/members.py
index 9e2d303..76f30f5 100644
--- a/pydusken/members.py
+++ b/pydusken/members.py
@@ -9,7 +9,7 @@ class Members(object):
     
     def __request_auth_headers(self):
         return {
-            'Authorization': "Oauth {}".format(self._api.access_token)
+            'Authorization': "Oauth {0}".format(self._api.access_token)
         }
 
 
diff --git a/pydusken/models.py b/pydusken/models.py
index 77bb6bb..7afd5c4 100644
--- a/pydusken/models.py
+++ b/pydusken/models.py
@@ -6,4 +6,4 @@ class DuskenAccessToken(models.Model):
     user = models.OneToOneField(User)
 
     def __unicode__(self):
-        return u"{} {}".format(self.user, self.access_token)
+        return u"{0} {1}".format(self.user, self.access_token)