diff --git a/FHEM/91_notify.pm b/FHEM/91_notify.pm
index 40924d6bc..8cf424575 100644
--- a/FHEM/91_notify.pm
+++ b/FHEM/91_notify.pm
@@ -275,6 +275,8 @@ notify_fhemwebFn($$$$)
       $ret .= "</tr>";
     }
   }
+  $ret .= '<script>setTimeout(function(){if(FW_checkNotifydev)'.
+          'FW_checkNotifydev("REGEXP")}, 100)</script>';
 
   my @et = devspec2array("TYPE=eventTypes");
   if(!@et) {
diff --git a/FHEM/92_FileLog.pm b/FHEM/92_FileLog.pm
index bf20b8d53..22385644e 100644
--- a/FHEM/92_FileLog.pm
+++ b/FHEM/92_FileLog.pm
@@ -566,6 +566,8 @@ FileLog_fhemwebFn($$$$)
   # DETAIL only from here on
   my $hash = $defs{$d};
 
+  $ret .= '<script>setTimeout(function(){if(FW_checkNotifydev)'.
+          'FW_checkNotifydev("REGEXP")}, 100)</script>';
   $ret .= "<br>Regexp parts";
   $ret .= "<br><table class=\"block wide\">";
   my @ra = split(/\|/, $hash->{REGEXP});
diff --git a/www/pgm2/fhemweb.js b/www/pgm2/fhemweb.js
index db09a1b90..fc5c047bf 100644
--- a/www/pgm2/fhemweb.js
+++ b/www/pgm2/fhemweb.js
@@ -2130,6 +2130,30 @@ FW_getSVG(emb)
   return undefined;
 }
 
+function
+FW_checkNotifydev(reName)
+{
+  var internals={};
+  $("table.internals tr td div.dname").each(function(){
+    internals[$(this).html()] = this;
+  });
+  if(!internals[reName] || internals.NOTIFYDEV)
+    return;
+  $(internals[reName])
+    .html(reName+" <a>(!)</a>")
+    .css("cursor","pointer")
+    .click(function(){
+      var val = $(internals[reName]).closest("tr").find("div[informid]").text();
+      FW_okDialog("Could not optimize the regexp:<ul>"+val+
+                "</ul>How I tried (notifyRegexpCheck):<ul><pre></pre></ul>");
+      FW_cmd(FW_root+'?cmd={notifyRegexpCheck("'+val+'")}&XHR=1',
+      function(res){
+        $("#FW_okDialog pre").html(res);
+      });
+
+    });
+}
+
 /*
 =pod