diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index a7f41c9..643e4a8 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -2580,7 +2580,8 @@ function drupal_common_theme() {
       'template' => 'feed-icon',
     ),
     'more_link' => array(
-      'variables' => array('url' => NULL, 'title' => NULL)
+      'variables' => array('url' => NULL, 'title' => NULL),
+      'function' => 'theme_more_link',
     ),
     'progress_bar' => array(
       'variables' => array('label' => NULL, 'percent' => NULL, 'message' => NULL),
diff --git a/core/modules/system/system.api.php b/core/modules/system/system.api.php
index c34b240..146fe2f 100644
--- a/core/modules/system/system.api.php
+++ b/core/modules/system/system.api.php
@@ -1111,20 +1111,16 @@ function hook_theme($existing, $type, $theme, $path) {
   return array(
     'forum_display' => array(
       'variables' => array('forums' => NULL, 'topics' => NULL, 'parents' => NULL, 'tid' => NULL, 'sortby' => NULL, 'forum_per_page' => NULL),
-      'function' => 'theme_forum_display',
     ),
     'forum_list' => array(
       'variables' => array('forums' => NULL, 'parents' => NULL, 'tid' => NULL),
-      'function' => 'theme_forum_list',
     ),
     'forum_icon' => array(
       'variables' => array('new_posts' => NULL, 'num_posts' => 0, 'comment_mode' => 0, 'sticky' => 0),
-      'function' => 'theme_forum_icon',
     ),
     'status_report' => array(
       'render element' => 'requirements',
       'file' => 'system.admin.inc',
-      'function' => 'theme_status_report',
     ),
   );
 }