diff --git a/templates/layouts/main.html.ep b/templates/layouts/main.html.ep
index a7798e4..5e0c8d7 100644
--- a/templates/layouts/main.html.ep
+++ b/templates/layouts/main.html.ep
@@ -6,7 +6,7 @@
   <head prefix="og: http://ogp.me/ns# website: http://ogp.me/ns/website#">
     <title><%= title() // loc('korap_desc') %></title>
     <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=false, user-scalable=no" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0" />
     <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <meta http-equiv="Content-Style-Type" content="text/css" />