diff --git a/templates/2k11/index.tpl b/templates/2k11/index.tpl
index 0cdfcd03..677a7de8 100644
--- a/templates/2k11/index.tpl
+++ b/templates/2k11/index.tpl
@@ -8,7 +8,7 @@
     <meta charset="{$head_charset}">
     <title>{$head_title|@default:$blogTitle}{if $head_subtitle} | {$head_subtitle}{/if}</title>
     <meta name="generator" content="Serendipity v.{$head_version}">
-    <meta name="viewport" content="width=device-width">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
 {if $template_option.webfonts == 'droid'}
     <link  rel="stylesheet" href="//fonts.googleapis.com/css?family=Droid+Sans:400,700">
 {elseif $template_option.webfonts == 'ptsans'}
diff --git a/templates/2k11/preview_iframe.tpl b/templates/2k11/preview_iframe.tpl
index 19732411..f1a8b169 100644
--- a/templates/2k11/preview_iframe.tpl
+++ b/templates/2k11/preview_iframe.tpl
@@ -7,7 +7,7 @@
     <meta charset="{$head_charset}">
     <title>{$CONST.SERENDIPITY_ADMIN_SUITE}</title>
     <meta name="generator" content="Serendipity v.{$head_version}">
-    <meta name="viewport" content="width=device-width">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
 {if $template_option.webfonts == 'droid'}
     <link  rel="stylesheet" href="//fonts.googleapis.com/css?family=Droid+Sans:400,700">
 {elseif $template_option.webfonts == 'ptsans'}