diff --git a/www/pgm2/fhemweb.js b/www/pgm2/fhemweb.js
index c267c42f1..24199cf9d 100644
--- a/www/pgm2/fhemweb.js
+++ b/www/pgm2/fhemweb.js
@@ -291,7 +291,7 @@ FW_jqueryReadyFn()
   $("select[id^=sel_attr],select[id^=sel_set],select[id^=sel_get]")
   .change(function(){ // online help
     var val = $(this).val();
-    var m = $(this).attr("id").match(/sel_(set|get|attr)(.*)/);
+    var m = $(this).attr("name").match(/arg.(set|get|attr)(.*)/);
     if(!m)
       return;
     $("#devSpecHelp").remove();