diff --git a/src/admin/index.html b/src/admin/index.html
index 46a9382db8..eda5423871 100644
--- a/src/admin/index.html
+++ b/src/admin/index.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
 </head>
 
 <body>
