diff --git a/src/core/QueueRunner.js b/src/core/QueueRunner.js
index 3196e15b..94e647de 100644
--- a/src/core/QueueRunner.js
+++ b/src/core/QueueRunner.js
@@ -7,6 +7,7 @@ getJasmineRequireObj().QueueRunner = function(j$) {
         called = true;
         fn();
       }
+      return null;
     };
   }