diff --git a/docs/_includes/getting-started/browser-device-support.html b/docs/_includes/getting-started/browser-device-support.html
index 8a3a155eed..33cacdc5fb 100644
--- a/docs/_includes/getting-started/browser-device-support.html
+++ b/docs/_includes/getting-started/browser-device-support.html
@@ -152,8 +152,6 @@
 {% endhighlight %}
   <p>However, this doesn't work for devices running Windows Phone 8 versions older than <a href="http://blogs.windows.com/windows_phone/b/wpdev/archive/2013/10/14/introducing-windows-phone-preview-for-developers.aspx">Update 3 (a.k.a. GDR3)</a>, as it causes such devices to show a mostly desktop view instead of narrow "phone" view. To address this, you'll need to <strong>include the following CSS and JavaScript to work around the bug</strong>.</p>
 {% highlight scss %}
-@-webkit-viewport   { width: device-width; }
-@-moz-viewport      { width: device-width; }
 @-ms-viewport       { width: device-width; }
 @-o-viewport        { width: device-width; }
 @viewport           { width: device-width; }
diff --git a/docs/assets/css/ie10-viewport-bug-workaround.css b/docs/assets/css/ie10-viewport-bug-workaround.css
index 8b3803b48d..4b9518e218 100644
--- a/docs/assets/css/ie10-viewport-bug-workaround.css
+++ b/docs/assets/css/ie10-viewport-bug-workaround.css
@@ -8,8 +8,6 @@
  * See the Getting Started docs for more information:
  * http://getbootstrap.com/getting-started/#support-ie10-width
  */
-@-webkit-viewport { width: device-width; }
-@-moz-viewport    { width: device-width; }
 @-ms-viewport     { width: device-width; }
 @-o-viewport      { width: device-width; }
 @viewport         { width: device-width; }