diff --git a/FHEM/90_at.pm b/FHEM/90_at.pm
index 8d1577ab9..b74e6cdb2 100644
--- a/FHEM/90_at.pm
+++ b/FHEM/90_at.pm
@@ -84,6 +84,7 @@ at_Define($$)
         $abstime = mktime($s,$m2,$h,$d,$m-1,$y-1900, 0,0,-1);
 
       } else {
+        $hash->{STATE} = $err;
         return $err;
       }