diff --git a/core/modules/help/lib/Drupal/help/Controller/HelpController.php b/core/modules/help/lib/Drupal/help/Controller/HelpController.php
index c35d48f..c020b51 100644
--- a/core/modules/help/lib/Drupal/help/Controller/HelpController.php
+++ b/core/modules/help/lib/Drupal/help/Controller/HelpController.php
@@ -7,6 +7,7 @@
 namespace Drupal\help\Controller;
 
 use Drupal\Core\ControllerInterface;
+use Drupal\Core\Extension\ModuleHandler;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -15,10 +16,24 @@
 class HelpController implements ControllerInterface {
 
   /**
+   * Stores the Module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandler
+   */
+  protected $moduleHandler;
+
+  /**
+   * Constructs a HelpController object.
+   */
+  public function __construct(ModuleHandler $module_handler) {
+    $this->moduleHandler = $module_handler;
+  }
+
+  /**
    * {@inheritdoc}
    */
   public static function create(ContainerInterface $container) {
-    return new static();
+    return new static($container->get('module_handler'));
   }
 
   /**
@@ -42,8 +57,8 @@ private function helpLinksAsList() {
     $module_info = system_rebuild_module_data();
 
     $modules = array();
-    foreach (module_implements('help') as $module) {
-      if (module_invoke($module, 'help', "admin/help#$module", $empty_arg)) {
+    foreach ($this->moduleHandler->getImplementations('help') as $module) {
+      if ($this->moduleHandler->invoke($module, 'help', array("admin/help#$module", $empty_arg))) {
         $modules[$module] = $module_info[$module]->info['name'];
       }
     }
@@ -65,6 +80,4 @@ private function helpLinksAsList() {
 
     return $output;
   }
-
-
 }