diff --git a/js/questionset.js b/js/questionset.js
index 8518a7d..0a29e99 100644
--- a/js/questionset.js
+++ b/js/questionset.js
@@ -125,6 +125,7 @@ H5P.QuestionSet = function (options, contentId, contentData) {
       showAnimations: false,
       skipButtonText: 'Skip video'
     },
+    override: {},
     disableBackwardsNavigation: false
   };