diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index e015e63d9..d4e3f295a 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -3973,7 +3973,7 @@ delFromDevAttrList($$)
   $attr{$dev}{userattr} = join(" ", sort keys %hash);
   delete $attr{$dev}{userattr}
         if(!keys %hash && defined($attr{$dev}{userattr}));
-  map { delete $attr{$dev}{$_} } split(" ", $arg);
+  map { delete $attr{$dev}{$_} } split(" ", (split(":", $arg))[0]);
 }