diff --git a/fhem/FHEM/73_PRESENCE.pm b/fhem/FHEM/73_PRESENCE.pm
index 878c2ec30..6daf0f818 100755
--- a/fhem/FHEM/73_PRESENCE.pm
+++ b/fhem/FHEM/73_PRESENCE.pm
@@ -209,6 +209,8 @@ sub
 PRESENCE_Set($@)
 {
     my ($hash, @a) = @_;
+
+    return "No Argument given" if(!defined($a[1]));
    
     my $usage = ($hash->{MODE} ne "lan-bluetooth" ? "Unknown argument ".$a[1].", choose one of statusRequest " : undef);