diff --git a/fhem/FHEM/98_fhemdebug.pm b/fhem/FHEM/98_fhemdebug.pm
index 21d7df2b2..87d25fa2e 100644
--- a/fhem/FHEM/98_fhemdebug.pm
+++ b/fhem/FHEM/98_fhemdebug.pm
@@ -54,8 +54,9 @@ fhemdebug_Fn($$)
       $main_readingsEndUpdate = \&readingsEndUpdate;
       $main_setReadingsVal = \&setReadingsVal;
       *readingsEndUpdate = sub($$){ 
-        $_[1]=1 if(AttrVal($_[0]->{NAME}, "forceEvents", 0));
-        &{$main_readingsEndUpdate}(@_);
+        my $dt = $_[1];
+        $dt = 1 if(AttrVal($_[0]->{NAME}, "forceEvents", 0));
+        &{$main_readingsEndUpdate}($_[0], $dt);
       };
       *setReadingsVal = sub($$$$) {
         DoTrigger($_[0]->{NAME}, "$_[1] $_[2]")