diff --git a/browser/components/loop/test/shared/roomStore_test.js b/browser/components/loop/test/shared/roomStore_test.js
index 741aef06aead..64d5f686d86d 100644
--- a/browser/components/loop/test/shared/roomStore_test.js
+++ b/browser/components/loop/test/shared/roomStore_test.js
@@ -77,6 +77,7 @@ describe("loop.store.RoomStore", function () {
     beforeEach(function() {
       fakeMozLoop = {
         copyString: function() {},
+        notifyUITour: function() {},
         rooms: {
           create: function() {},
           getAll: function() {},