diff --git a/kallithea/templates/base/root.html b/kallithea/templates/base/root.html
--- a/kallithea/templates/base/root.html
+++ b/kallithea/templates/base/root.html
@@ -5,6 +5,7 @@
         <title><%block name="title"/><%block name="branding_title"/></title>
         <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
         <meta name="robots" content="index, nofollow"/>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <link rel="icon" href="${h.url('/images/favicon.ico')}" type="image/x-icon" />
 
         ## CSS ###