diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 5291d3b..8fd0c96 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -539,8 +539,7 @@ function system_element_info() {
     '#pre_render' => array('drupal_pre_render_link'),
   );
   // A "more" link, like those used in blocks.
-  $types['more_link'] = $types['link'];
-  $types['more_link'] += array(
+  $types['more_link'] = $types['link'] + array(
     '#title' => t('More'),
     '#theme_wrappers' => array(
       'container' => array(