diff --git a/fhem/FHEM/10_MQTT2_DEVICE.pm b/fhem/FHEM/10_MQTT2_DEVICE.pm
index 7107dffea..1c0f759da 100644
--- a/fhem/FHEM/10_MQTT2_DEVICE.pm
+++ b/fhem/FHEM/10_MQTT2_DEVICE.pm
@@ -321,7 +321,7 @@ MQTT2_getCmdHash($$)
     $k =~ s/:.*//; # potential arguments
     $h{$k} = $v;
   }
-  grep /./,
+  grep /[^ ]+/,
   split("\n", $list);
   return (\%h, join(" ",@cmd));
 }