diff --git a/resources/z9/z9-router/nftables/nftables.conf b/resources/z9/z9-router/nftables/nftables.conf
index 5e5716aeca..95379121fa 100644
--- a/resources/z9/z9-router/nftables/nftables.conf
+++ b/resources/z9/z9-router/nftables/nftables.conf
@@ -78,7 +78,7 @@ table inet host {
         iifname { $lan_ifs } udp dport 547 accept comment "allow dhcpv6 server access"
 
         # Allow DNS server access from lan_ifs
-        iifname { $lan_ifs, $if_wg56_management } meta l4proto { tcp, udp } dport 53 accept comment "allow dns server access from lan_ifs"
+        iifname { $lan_ifs, $if_wg56_management } meta l4proto { tcp, udp } th dport 53 accept comment "allow dns server access from lan_ifs"
     }
 }