diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 04b29f5e1..353965ec4 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -1720,7 +1720,7 @@ DelayedShutdown($$)
 {
   my ($cl, $param) = @_;
 
-  %delayedShutdowns = ();
+  return 1 if(keys %delayedShutdowns);
   foreach my $d (sort keys %defs) {
     $delayedShutdowns{$d} = 1 if(CallFn($d, "DelayedShutdownFn", $defs{$d}));
   }