diff --git a/stable.user.js b/stable.user.js
index 157f775..b6630e0 100755
--- a/stable.user.js
+++ b/stable.user.js
@@ -46,7 +46,7 @@
 // : Script header {{{
 // ==UserScript==
 // @name         Moodle/Elearning/KMOOC test help
-// @version      2.1.3.1
+// @version      2.1.3.2
 // @description  Online Moodle/Elearning/KMOOC test help
 // @author       MrFry
 // @match        https://elearning.uni-obuda.hu/*
@@ -117,7 +117,7 @@
   // ------------------------------------------------------------------------------
   // forcing pages for testing. unless you test, do not set these to true!
   const isDevel = false
-  const forcedMatchString = isDevel ? '' : ''
+  const forcedMatchString = isDevel ? '' : null
   // only one of these should be true for testing
   const forceTestPage = isDevel && false
   const forceResultPage = isDevel && false