diff --git a/Shorewall/Perl/Shorewall/Zones.pm b/Shorewall/Perl/Shorewall/Zones.pm
index 1f6120b07..410fbf4a1 100644
--- a/Shorewall/Perl/Shorewall/Zones.pm
+++ b/Shorewall/Perl/Shorewall/Zones.pm
@@ -1022,7 +1022,6 @@ sub validate_hosts_file()
 			 norfc1918 => 1,
 			 nosmurfs => 1,
 			 routeback => 1,
-			 routefilter => 1,
 			 tcpflags => 1,
 			 broadcast => 1,
 			 destonly => 1,