--- a/WebBrowser/GreaseMonkey/GreaseMonkeyJavaScript.py	Mon Jun 04 19:56:34 2018 +0200
+++ b/WebBrowser/GreaseMonkey/GreaseMonkeyJavaScript.py	Tue Jun 05 19:14:10 2018 +0200
@@ -125,7 +125,7 @@
 
 function GM_getValue(aKey, aDefault) {{
     var val = localStorage.getItem("{0}" + aKey)
-    if (null === val && 'undefined' != typeof aDefault) return aDefault;
+    if (null === val) return aDefault;
     return val;
 }}