diff --git a/controls_TeslaPowerwall2AC.txt b/controls_TeslaPowerwall2AC.txt
index 3a12d2e..ea25812 100644
--- a/controls_TeslaPowerwall2AC.txt
+++ b/controls_TeslaPowerwall2AC.txt
@@ -1,2 +1,2 @@
 UPD 2021-03-27_15:47:11 6982 FHEM/46_TeslaPowerwall2AC.pm
-UPD 2021-03-27_16:39:34 28868 lib/FHEM/Tesla/Powerwall.pm
+UPD 2021-03-27_16:41:12 28868 lib/FHEM/Tesla/Powerwall.pm
diff --git a/lib/FHEM/Tesla/Powerwall.pm b/lib/FHEM/Tesla/Powerwall.pm
index 8ee2386..e8dfed4 100644
--- a/lib/FHEM/Tesla/Powerwall.pm
+++ b/lib/FHEM/Tesla/Powerwall.pm
@@ -392,7 +392,7 @@ sub Set {
     elsif ( lc $cmd eq 'setpassword' ) {
         return q{please set Attribut emailaddr first}
           if ( AttrVal( $name, 'emailaddr', 'none' ) eq 'none' );
-        return qq(usage: ${cmd} pass=<password>) if ( scalar( @{$aArg} ) != 2
+        return qq(usage: ${cmd} pass=<password>) if ( scalar( @{$aArg} ) != 0
                                                    || scalar(keys %{$hArg}) != 1 );
 
         StorePassword( $hash, $name, $hArg->{'pass'} );