diff --git a/pages/updates/updates.html b/pages/updates/updates.html
index 8772e765..e4999781 100644
--- a/pages/updates/updates.html
+++ b/pages/updates/updates.html
@@ -33,6 +33,10 @@
                         <ul>
                             <li>Wildcard support extended in all lists (<a href="https://codeberg.org/nobody/LocalCDN/issues/1622">#1622</a>)</li>
                         </ul>
+                        <p>Fixed</p>
+                        <ul>
+                            <li>Welcome Page autoclose if check "Allow this extension to run in Private Windows" (<a href="https://codeberg.org/nobody/LocalCDN/issues/1625">#1625</a>)</li>
+                        </ul>
                     </div>
                     <div id="generator-section">
                         <div class="topic-label">
diff --git a/pages/welcome/welcome.html b/pages/welcome/welcome.html
index a40ca815..462ab841 100644
--- a/pages/welcome/welcome.html
+++ b/pages/welcome/welcome.html
@@ -9,7 +9,6 @@
         <link rel="stylesheet" type="text/css" href="../style.css">
         <link rel="stylesheet" type="text/css" href="../base.css">
         <link rel="stylesheet" type="text/css" href="welcome.css">
-        <script src="../../core/constants.js"></script>
         <script src="welcome.js"></script>
     </head>
     <body>
@@ -18,7 +17,7 @@
         <div class="notice">
             <h2>What is LocalCDN?</h2>
             <p>LocalCDN is a web browser extension that emulates Content Delivery Networks to improve your online privacy. It intercepts traffic, finds supported resources locally, and injects them into the environment. All of this happens automatically, so no prior configuration is required. Feel free to use one of our <a href="https://www.localcdn.org/test/" rel="nofollow noopener noreferrer">testing utilities</a> to find out if you are properly protected. For a good start there is a short <a href="https://www.localcdn.org/tutorial" rel="nofollow noopener noreferrer">tutorial</a> and our <a href="https://codeberg.org/nobody/LocalCDN/wiki" rel="nofollow noopener noreferrer">Wiki pages</a>. LocalCDN supports more than 100 Libraries and 26 CDNs!</p>
-            <p id="chromium-banner">Non-Firefox browsers do not support all features of LocalCDN. <a class="no-icon" href="../help/help.html#non-firefox">Read more</a></p>
+            <p id="chromium-banner" hidden>Non-Firefox browsers do not support all features of LocalCDN. <a class="no-icon" href="../help/help.html#non-firefox">Read more</a></p>
             <a id="donate" class="no-icon" href="../donate/donate.html">If you like LocalCDN, I would be happy about a small donation.</a>
         </div>
         <div class="notice">
diff --git a/pages/welcome/welcome.js b/pages/welcome/welcome.js
index c7cfa125..4da70e3a 100644
--- a/pages/welcome/welcome.js
+++ b/pages/welcome/welcome.js
@@ -27,7 +27,7 @@ var welcome = {};
  */
 
 welcome._onDocumentLoaded = function () {
-    if (!BrowserType.FIREFOX) {
+    if (!window.location.href.startsWith('moz-extension')) {
         document.getElementById('chromium-banner').style.display = 'block';
     }
     document.getElementById('open-settings').addEventListener('mouseup', function () { chrome.runtime.openOptionsPage(); });
