diff --git a/Shorewall/Perl/Shorewall/Policy.pm b/Shorewall/Perl/Shorewall/Policy.pm
index 7db646f82..15fa1e7b0 100644
--- a/Shorewall/Perl/Shorewall/Policy.pm
+++ b/Shorewall/Perl/Shorewall/Policy.pm
@@ -346,7 +346,7 @@ sub policy_rules( $$$$$ ) {
     my ( $chainref , $target, $loglevel, $default, $dropmulticast ) = @_;
 
     unless ( $target eq 'NONE' ) {
-	add_rule $chainref, "-d 224.0.0.0/24 -j RETURN" if $dropmulticast && $target ne 'CONTINUE' && $target ne 'ACCEPT';
+	add_rule $chainref, "-d 224.0.0.0/4 -j RETURN" if $dropmulticast && $target ne 'CONTINUE' && $target ne 'ACCEPT';
 	add_rule $chainref, "-j $default" if $default && $default ne 'none';
 	log_rule $loglevel , $chainref , $target , '' if $loglevel ne '';
 	fatal_error "Null target in policy_rules()" unless $target;