diff --git a/packages/ui/certd-client/index.html b/packages/ui/certd-client/index.html
index 5fcdfa73..e4958a0c 100644
--- a/packages/ui/certd-client/index.html
+++ b/packages/ui/certd-client/index.html
@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8"/>
     <link rel="icon" href="api/app/favicon"/>
-    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
     <title>Loading</title>
     <script src="static/icons/iconfont.js?v=<%=version%>"></script>
     <link rel="stylesheet" type="text/css" href="static/index.css?v=<%=version%>"/>
