diff --git a/ferm/ferm.conf b/ferm/ferm.conf
index 8a961d4..2ab12ae 100644
--- a/ferm/ferm.conf
+++ b/ferm/ferm.conf
@@ -65,7 +65,7 @@ table filter {
         proto icmp icmp-type echo-request ACCEPT;
 
         # local services
-        interface $DEV_WAN daddr $IP_WAN mod state state NEW {
+        daddr $IP_WAN mod state state NEW {
             # DNS requests
             @if $DNS_ON_WAN proto (udp tcp) dport 53
                 mod comment comment "DNS on WAN"