diff --git a/app/src/main/java/de/synyx/android/meeroo/business/event/EventModel.java b/app/src/main/java/de/synyx/android/meeroo/business/event/EventModel.java
index b476666..7b3054f 100644
--- a/app/src/main/java/de/synyx/android/meeroo/business/event/EventModel.java
+++ b/app/src/main/java/de/synyx/android/meeroo/business/event/EventModel.java
@@ -20,9 +20,9 @@ public class EventModel implements Comparable<EventModel> {
     private final String name;
     private final DateTime begin;
     private final DateTime end;
-    private int status;
+    private final int status;
     private final boolean isRecurring;
-    private List<Attendee> attendees = new ArrayList<>();
+    private final List<Attendee> attendees = new ArrayList<>();
 
     public EventModel(Long id, String name, DateTime begin, DateTime end, int status, boolean isRecurring) {