diff --git a/luci-app-firewall/htdocs/luci-static/resources/view/firewall/rules.js b/luci-app-firewall/htdocs/luci-static/resources/view/firewall/rules.js
index 8cb1a1242..bacbbd704 100644
--- a/luci-app-firewall/htdocs/luci-static/resources/view/firewall/rules.js
+++ b/luci-app-firewall/htdocs/luci-static/resources/view/firewall/rules.js
@@ -308,6 +308,7 @@ return view.extend({
 		o.value('network-redirect');
 		o.value('network-unknown');
 		o.value('network-unreachable');
+		o.value('packet-too-big');
 		o.value('parameter-problem');
 		o.value('port-unreachable');
 		o.value('precedence-cutoff');
diff --git a/luci-app-firewall/htdocs/luci-static/resources/view/firewall/zones.js b/luci-app-firewall/htdocs/luci-static/resources/view/firewall/zones.js
index 5e2b6cd81..00e272677 100644
--- a/luci-app-firewall/htdocs/luci-static/resources/view/firewall/zones.js
+++ b/luci-app-firewall/htdocs/luci-static/resources/view/firewall/zones.js
@@ -177,9 +177,11 @@ return view.extend({
 				}
 
 			return Promise.all(tasks).then(function(zone_networks) {
-				if (zone_networks[0])
+				if (zone_networks[0]) {
+					zone_networks[0].clearNetworks();
 					for (var i = 1; i < zone_networks.length; i++)
 						zone_networks[0].addNetwork(zone_networks[i].getName());
+				}
 			});
 		};