diff --git a/core/includes/common.inc b/core/includes/common.inc
index a5756f7..8ba8863 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -1790,7 +1790,7 @@ function drupal_merge_attached(array $a, array $b) {
  * other kind of attached data, the array key must be the full name of the
  * callback function and each value an array of arguments. For example:
  * @code
- * $build['#attached']['_drupal_add_http_header'] = array(
+ * $build['#attached']['http_header'] = array(
  *   array('Content-Type', 'application/rss+xml; charset=utf-8'),
  * );
  * @endcode
@@ -1870,19 +1870,15 @@ function drupal_process_attached($elements, $dependency_check = FALSE) {
     foreach ($elements['#attached'][$callback] as $args) {
       // Limit the amount allowed entries.
       switch ($callback) {
-        case '_drupal_add_html_head':
         case 'html_head':
           call_user_func_array('_drupal_add_html_head', $args);
           break;
-        case '_drupal_add_feed':
         case 'feed':
           call_user_func_array('_drupal_add_feed', $args);
           break;
-        case '_drupal_add_html_head_link':
         case 'html_head_link':
           call_user_func_array('_drupal_add_html_head_link', $args);
           break;
-        case '_drupal_add_http_header':
         case 'http_header':
           call_user_func_array('_drupal_add_http_header', $args);
           break;