diff --git a/core/modules/system/tests/modules/menu_test/menu_test.module b/core/modules/system/tests/modules/menu_test/menu_test.module
index 695c216..b8a62cc 100644
--- a/core/modules/system/tests/modules/menu_test/menu_test.module
+++ b/core/modules/system/tests/modules/menu_test/menu_test.module
@@ -582,9 +582,6 @@ function menu_test_theme_callback($argument) {
 
 /**
  * Implement hook_custom_theme().
- *
- * @return
- *   The name of the custom theme to use for the current page.
  */
 function menu_test_custom_theme() {
   // If an appropriate variable has been set in the database, request the theme
@@ -614,9 +611,6 @@ function menu_test_menu_name($new_name = '') {
 
 /**
  * Implements hook_menu_link_insert().
- *
- * @return
- *  A random string.
  */
 function menu_test_menu_link_insert(MenuLink $item) {
   menu_test_static_variable('insert');
@@ -624,9 +618,6 @@ function menu_test_menu_link_insert(MenuLink $item) {
 
 /**
  * Implements hook_menu_link_update().
- *
- * @return
- *  A random string.
  */
 function menu_test_menu_link_update(MenuLink $item) {
   menu_test_static_variable('update');
@@ -634,9 +625,6 @@ function menu_test_menu_link_update(MenuLink $item) {
 
 /**
  * Implements hook_menu_link_delete().
- *
- * @return
- *  A random string.
  */
 function menu_test_menu_link_delete(MenuLink $item) {
   menu_test_static_variable('delete');