diff --git a/fhem/FHEM/10_MQTT2_DEVICE.pm b/fhem/FHEM/10_MQTT2_DEVICE.pm
index 066aa8992..9c1d11ac8 100644
--- a/fhem/FHEM/10_MQTT2_DEVICE.pm
+++ b/fhem/FHEM/10_MQTT2_DEVICE.pm
@@ -617,7 +617,7 @@ MQTT2_DEVICE_addReading($$)
         $modules{MQTT2_DEVICE}{defptr}{"re:$cid"}{$re}{"$name,$code"} = 1;
       }
     } else {
-      if($re =~ m/^([^\\\?.*\[\](|)]+):\.\*$/) {
+      if($re =~ m/^([^:\\\?.*\[\](|)]+):\.\*$/) { # nothing smelling like regexp
         $modules{MQTT2_DEVICE}{defptr}{"re:*:$1"}{$re}{"$name,$code"} = 1;
       } else {
         $modules{MQTT2_DEVICE}{defptr}{re}{$re}{"$name,$code"} = 1;