diff --git a/spec/fixtures/api/native-window-open-cross-origin.html b/spec/fixtures/api/native-window-open-cross-origin.html
index c92683c0c3b2..a6d49bb80adc 100644
--- a/spec/fixtures/api/native-window-open-cross-origin.html
+++ b/spec/fixtures/api/native-window-open-cross-origin.html
@@ -2,7 +2,7 @@
 <body>
 <script type="text/javascript" charset="utf-8">
   const {ipcRenderer} = require('electron')
-  const popup = window.open('http://host')
+  const popup = window.open('http://127.0.0.1')
   const intervalID = setInterval(function () {
     try {
       if (popup.location.toString() !== 'about:blank') {
