diff --git a/core/modules/system/lib/Drupal/system/Controller/SystemController.php b/core/modules/system/lib/Drupal/system/Controller/SystemController.php
index 8b67388..d528e43 100644
--- a/core/modules/system/lib/Drupal/system/Controller/SystemController.php
+++ b/core/modules/system/lib/Drupal/system/Controller/SystemController.php
@@ -48,14 +48,4 @@ public function systemAdminMenuBlockPage() {
     }
     return $output;
   }
-
-  /**
-   * Prints a listing of all books.
-   *
-   * @return string
-   *   A HTML-formatted string with the listing of all books content.
-   */
-  public function bookRender() {
-  }
-
 }
diff --git a/core/modules/system/tests/modules/design_test/design_test.module b/core/modules/system/tests/modules/design_test/design_test.module
index a7ab1b5..d35e491 100644
--- a/core/modules/system/tests/modules/design_test/design_test.module
+++ b/core/modules/system/tests/modules/design_test/design_test.module
@@ -137,9 +137,9 @@ function design_test_menu_theme_callback() {
 /**
  * Menu page callback for a category listing page.
  *
- * This is a specialized version of system_admin_menu_block_page(), which
- * retrieves all direct child menu links of the current page, regardless of
- * their type, skips default local tasks, and outputs them as a simple menu
+ * This is a specialized version of SystemController::systemAdminMenuBlockPage()
+ * , which retrieves all direct child menu links of the current page, regardless
+ * of their type, skips default local tasks, and outputs them as a simple menu
  * tree as the main page content.
  *
  * @param string $category
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 ce68fe9..68f5d48 100644
--- a/core/modules/system/tests/modules/menu_test/menu_test.module
+++ b/core/modules/system/tests/modules/menu_test/menu_test.module
@@ -24,14 +24,11 @@ function menu_test_menu() {
     'type' => MENU_CALLBACK,
     'access arguments' => array('access content'),
   );
-  // This item uses system_admin_menu_block_page() to list child items.
+  // This item uses SystemController::systemAdminMenuBlockPage() to list child items.
   $items['menu_callback_description'] = array(
     'title' => 'Menu item title',
-    'page callback' => 'system_admin_menu_block_page',
     'description' => 'Menu item description parent',
-    'access arguments' => array('access content'),
-    'file' => 'system.admin.inc',
-    'file path' => drupal_get_path('module', 'system'),
+    'route_name' => 'menu_callback_description',
   );
   $items['menu_callback_description/description-plain'] = array(
     'title' => 'Menu item with a regular description',
@@ -295,7 +292,7 @@ function menu_test_menu() {
   );
 
   // File inheritance tests. This menu item should inherit the page callback
-  // system_admin_menu_block_page() and therefore render its children as links
+  // SystemController::systemAdminMenuBlockPage() and therefore render its children as links
   // on the page.
   $items['admin/config/development/file-inheritance'] = array(
     'title' => 'File inheritance',
diff --git a/core/modules/system/tests/modules/menu_test/menu_test.routing.yml b/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
index 09b42ba..92e02e9 100644
--- a/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
+++ b/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
@@ -1,3 +1,10 @@
+menu_callback_description:
+  pattern: 'menu_callback_description'
+  defaults:
+    _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
+  requirements:
+    _permission: 'access content'
+
 menu_router_test1:
   pattern: '/foo/{bar}'
   defaults:
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index abfe84b..c4232de 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -976,15 +976,13 @@ function user_menu() {
 
   // Administration pages.
   $items['admin/config/people'] = array(
-   'title' => 'People',
-   'description' => 'Configure user accounts.',
-   'position' => 'left',
-   'weight' => -20,
-   'page callback' => 'system_admin_menu_block_page',
-   'access arguments' => array('access administration pages'),
-   'file' => 'system.admin.inc',
-   'file path' => drupal_get_path('module', 'system'),
+    'title' => 'People',
+    'description' => 'Configure user accounts.',
+    'position' => 'left',
+    'weight' => -20,
+    'route_name' => 'user_accounts',
   );
+
   $items['admin/config/people/accounts'] = array(
     'title' => 'Account settings',
     'description' => 'Configure default behavior of users, including registration requirements, e-mails, and fields.',
diff --git a/core/modules/user/user.routing.yml b/core/modules/user/user.routing.yml
index fb49de3..8d4b349 100644
--- a/core/modules/user/user.routing.yml
+++ b/core/modules/user/user.routing.yml
@@ -26,6 +26,13 @@ user_autocomplete_anonymous:
   requirements:
     _permission: 'access user profiles'
 
+user_accounts:
+  pattern: '/admin/config/people'
+  defaults:
+    _form: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
+  requirements:
+    _permission: 'access administration pages'
+
 user_account_settings:
   pattern: '/admin/config/people/accounts'
   defaults: