diff --git a/fhem.pl b/fhem.pl
index fcc032afb..3ed1105ec 100755
--- a/fhem.pl
+++ b/fhem.pl
@@ -4464,6 +4464,7 @@ notifyRegexpChanged($$)
   } else {
     delete($hash->{NOTIFYDEV}); # when called by modify
   }
+  %ntfyHash = ();
 }
 
 sub