diff --git a/web/src/components/events/EventItem.tsx b/web/src/components/events/EventItem.tsx
index 176c59f..ab67009 100644
--- a/web/src/components/events/EventItem.tsx
+++ b/web/src/components/events/EventItem.tsx
@@ -20,6 +20,7 @@ export const EventItem = ({
   size?: "small" | "medium" | "large";
 }) => {
   const nextOccurrence = getClosestOccurrence(event);
+  const numOccurrences = event?.occurrences?.length ?? 0;
 
   return (
     <li
@@ -42,9 +43,10 @@ export const EventItem = ({
         <h1 className={styles.title}>{event.title}</h1>
         {mode === "list" && nextOccurrence && (
           <p className={styles.details}>
-            {event.occurrences.length === 1 &&
+            {numOccurrences === 1 &&
+              nextOccurrence?.start &&
               formatDate(nextOccurrence.start, commonDateFormat)}
-            {event.occurrences.length > 1 && nextOccurrence && (
+            {numOccurrences > 1 && nextOccurrence?.start && (
               <span>
                 <em>Neste:</em>{" "}
                 {formatDate(nextOccurrence.start, commonDateFormat)}
@@ -52,11 +54,13 @@ export const EventItem = ({
             )}
           </p>
         )}
-        {mode === "calendar" && event.occurrence?.start && (
-          <p className={styles.details}>
-            {formatDate(event.occurrence?.start, "'kl.' HH:mm")}
-          </p>
-        )}
+        {mode === "calendar" &&
+          "occurrence" in event &&
+          event.occurrence?.start && (
+            <p className={styles.details}>
+              {formatDate(event.occurrence?.start, "'kl.' HH:mm")}
+            </p>
+          )}
       </div>
       <Link href={`/arrangementer/${event.slug}`} className="hiddenLink">
         Mer om arrangementet {event.title}
diff --git a/web/src/components/events/FeaturedEvents.tsx b/web/src/components/events/FeaturedEvents.tsx
index 471b5cd..6bc360a 100644
--- a/web/src/components/events/FeaturedEvents.tsx
+++ b/web/src/components/events/FeaturedEvents.tsx
@@ -6,7 +6,7 @@ export const FeaturedEvents = ({ events }: { events: EventFragment[] }) => {
   return (
     <ul className={styles.eventList}>
       {events.map((event) => (
-        <EventItem key={event.id} event={event} />
+        <EventItem key={event.id} event={event} mode="list" />
       ))}
     </ul>
   );
diff --git a/web/src/lib/event.ts b/web/src/lib/event.ts
index 9fb5c51..b0c64f8 100644
--- a/web/src/lib/event.ts
+++ b/web/src/lib/event.ts
@@ -95,8 +95,8 @@ function isDefined<T>(val: T | undefined | null): val is T {
 
 interface EventsByDate {
   [yearMonth: string]: {
-    [week: number]: {
-      [day: number]: SingularEvent[];
+    [week: string]: {
+      [day: string]: SingularEvent[];
     };
   };
 }