diff --git a/Shorewall/Perl/Shorewall/Rules.pm b/Shorewall/Perl/Shorewall/Rules.pm
index b57aab5b4..54b6736bb 100644
--- a/Shorewall/Perl/Shorewall/Rules.pm
+++ b/Shorewall/Perl/Shorewall/Rules.pm
@@ -773,12 +773,12 @@ sub setup_mac_lists( $ ) {
 			my $source = match_source_net $address;
 			log_rule_limit $level, $chainref , mac_chain( $interface) , $disposition, '', '', 'add' , "${mac}${source}"
 			    if defined $level && $level ne '';
-			add_jump $chainref , $targetref->{target}, 0, "${mac}${source} ";
+			add_jump $chainref , $targetref->{target}, 0, "${mac}${source}";
 		    }
 		} else {
 		    log_rule_limit $level, $chainref , mac_chain( $interface) , $disposition, '', '', 'add' , $mac
 			if defined $level && $level ne '';
-		    add_jump $chainref , $targetref->{target}, 0, "$mac ";
+		    add_jump $chainref , $targetref->{target}, 0, "$mac";
 		}
 
 		progress_message "      Maclist entry \"$currentline\" $done";