diff --git a/fhem/FHEM/00_MQTT2_CLIENT.pm b/fhem/FHEM/00_MQTT2_CLIENT.pm
index 8fa94688e..7802889a3 100644
--- a/fhem/FHEM/00_MQTT2_CLIENT.pm
+++ b/fhem/FHEM/00_MQTT2_CLIENT.pm
@@ -452,7 +452,7 @@ MQTT2_CLIENT_Set($@)
   if($a[0] eq "publish") {
     shift(@a);
     my $retain;
-    if(@a>2 && $a[0] eq "-r") {
+    if(@a>0 && $a[0] eq "-r") {
       $retain = 1;
       shift(@a);
     }