diff --git a/fhem/FHEM/00_MQTT2_CLIENT.pm b/fhem/FHEM/00_MQTT2_CLIENT.pm
index 3580941e8..811371542 100644
--- a/fhem/FHEM/00_MQTT2_CLIENT.pm
+++ b/fhem/FHEM/00_MQTT2_CLIENT.pm
@@ -339,7 +339,7 @@ MQTT2_CLIENT_Attr(@)
       $hash->{MatchList} = \%h;
       delete($hash->{".clientArray"}); # Force a recompute
     } else {
-      MQTT2_CLIENT_resetClients($hash});
+      MQTT2_CLIENT_resetClients($hash);
     }
   }