diff --git a/wp-admin/update.php b/wp-admin/update.php
index aedda30d3..57d0cceaa 100644
--- a/wp-admin/update.php
+++ b/wp-admin/update.php
@@ -6,7 +6,8 @@
  * @subpackage Administration
  */
 
-define('IFRAME_REQUEST' , true);
+if ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'update-selected', 'activate-plugin', 'update-selected-themes' ) ) )
+	define('IFRAME_REQUEST' , true);
 
 /** WordPress Administration Bootstrap */
 require_once('./admin.php');