diff --git a/fhem/www/pgm2/fhemweb.js b/fhem/www/pgm2/fhemweb.js
index a1bc8a0a7..4b3d2056b 100644
--- a/fhem/www/pgm2/fhemweb.js
+++ b/fhem/www/pgm2/fhemweb.js
@@ -202,7 +202,7 @@ FW_jqueryReadyFn()
         .html('<a>'+$(this).html()+'</a>')
         .css({cursor:"pointer"})
         .click(function(){
-          var aname = "#sel_attr"+$(this).attr("data-name");
+          var aname = "#sel_attr"+$(this).attr("data-name").replace(/\./g,'_');
           $(aname).val($(this).text());
           FW_detailSelect(aname);
         });