diff --git a/fhem/www/pgm2/fhemweb.js b/fhem/www/pgm2/fhemweb.js
index 5af656da9..a778589ab 100644
--- a/fhem/www/pgm2/fhemweb.js
+++ b/fhem/www/pgm2/fhemweb.js
@@ -1002,6 +1002,10 @@ FW_detLink()
     } else if(cmd == "forumCopy") {
       FW_cmd(FW_root+"?cmd=list -r -i "+dev+"&XHR=1", function(data) {
         var ta = document.createElement("textarea");
+        if(data.length > 60*1000) {
+          data = data.substr(0,60*1000)+
+                  "\n# ... truncated to 60k, original length "+data.length;
+        }
         ta.value = '[code]'+data+'[/code]';
         document.body.appendChild(ta);
         ta.select();