diff --git a/packages/browser-sync-ui/lib/async.js b/packages/browser-sync-ui/lib/async.js
index c55c79cc..24a19858 100644
--- a/packages/browser-sync-ui/lib/async.js
+++ b/packages/browser-sync-ui/lib/async.js
@@ -69,7 +69,7 @@ module.exports = {
         };
 
         if (bsUrls.external) {
-            var externalListen = listenHost || url.parse(bsUrls.external).hostname;
+            var externalListen = url.parse(bsUrls.external).hostname || listenHost;
             urls["ui-external"] = ["http://", externalListen, ":", port].join("");
         }