diff --git a/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js b/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
index c76e02dec..6d8e42582 100644
--- a/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
+++ b/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
@@ -511,7 +511,7 @@ return view.extend({
 
 					var new_ifnames = L.toArray(value);
 
-					if (value == undefined)
+					if (value == null)
 						return;
 
 					old_ifnames.sort();