diff --git a/src/stores/RoomViewStore.js b/src/stores/RoomViewStore.js
index 43964bc6c3..5ec0c67f2d 100644
--- a/src/stores/RoomViewStore.js
+++ b/src/stores/RoomViewStore.js
@@ -58,7 +58,7 @@ export class RoomViewStore extends Store {
         super(dis);
 
         // Initialise state
-        this._state = INITIAL_STATE;
+        this._state = Object.assign({}, INITIAL_STATE);
     }
 
     _setState(newState) {