diff --git a/stable.user.js b/stable.user.js
index 2136547..a888183 100755
--- a/stable.user.js
+++ b/stable.user.js
@@ -116,7 +116,6 @@
   // ------------------------------------------------------------------------------
   // forcing pages for testing. unless you test, do not set these to true!
   const isDevel = false
-  setVal('ISDEVEL', isDevel)
   const forcedMatchString = isDevel ? '' : ''
   // only one of these should be true for testing
   const forceTestPage = isDevel && false
@@ -146,7 +145,7 @@
   var elementUpdaterInterval = -1
   const overlayElemUpdateInterval = 2 // seconds
 
-  if (getVal('ISDEVEL')) {
+  if (isDevel) {
     log('Moodle script running in developement mode!')
     infoExpireTime = 1
     serverAdress = 'http://localhost:8080/'