diff --git a/core/lib/Drupal/Core/Menu/LocalTaskManager.php b/core/lib/Drupal/Core/Menu/LocalTaskManager.php
index 0acf4bc..e2a2499 100644
--- a/core/lib/Drupal/Core/Menu/LocalTaskManager.php
+++ b/core/lib/Drupal/Core/Menu/LocalTaskManager.php
@@ -126,7 +126,7 @@ public function __construct(ControllerResolverInterface $controller_resolver, Re
     $this->accessManager = $access_manager;
     $this->account = $account;
     $this->alterInfo($module_handler, 'local_tasks');
-    $this->setCacheBackend($cache, $language_manager, 'local_task_plugins', array('local_task' => 1));
+    $this->setCacheBackend($cache, $language_manager, 'local_task_plugins', array('local_task' => TRUE));
   }
 
   /**
diff --git a/core/modules/search/lib/Drupal/search/Form/SearchSettingsForm.php b/core/modules/search/lib/Drupal/search/Form/SearchSettingsForm.php
index bec3d21..9c09b39 100644
--- a/core/modules/search/lib/Drupal/search/Form/SearchSettingsForm.php
+++ b/core/modules/search/lib/Drupal/search/Form/SearchSettingsForm.php
@@ -6,6 +6,7 @@
 
 namespace Drupal\search\Form;
 
+use Drupal\Core\Cache\CacheBackendInterface;
 use Drupal\Core\Config\ConfigFactory;
 use Drupal\Core\Config\Context\ContextInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
@@ -49,6 +50,13 @@ class SearchSettingsForm extends ConfigFormBase {
   protected $state;
 
   /**
+   * The local task cache.
+   *
+   * @var \Drupal\Core\Cache\CacheBackendInterface
+   */
+  protected $cache;
+
+  /**
    * Constructs a \Drupal\search\Form\SearchSettingsForm object.
    *
    * @param \Drupal\Core\Config\ConfigFactory $config_factory
@@ -61,8 +69,10 @@ class SearchSettingsForm extends ConfigFormBase {
    *   The module handler
    * @param \Drupal\Core\KeyValueStore\KeyValueStoreInterface $state
    *   The state key/value store interface, gives access to state based config settings.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache
+   *   The cache cache bin used to clear the local task cache.
    */
-  public function __construct(ConfigFactory $config_factory, ContextInterface $context, SearchPluginManager $manager, ModuleHandlerInterface $module_handler, KeyValueStoreInterface $state) {
+  public function __construct(ConfigFactory $config_factory, ContextInterface $context, SearchPluginManager $manager, ModuleHandlerInterface $module_handler, KeyValueStoreInterface $state, CacheBackendInterface $cache) {
     parent::__construct($config_factory, $context);
     $this->searchSettings = $config_factory->get('search.settings');
     $this->searchPluginManager = $manager;
@@ -79,7 +89,8 @@ public static function create(ContainerInterface $container) {
       $container->get('config.context.free'),
       $container->get('plugin.manager.search'),
       $container->get('module_handler'),
-      $container->get('state')
+      $container->get('state'),
+      $container->get('cache.cache')
     );
   }
 
@@ -263,7 +274,7 @@ public function submitForm(array &$form, array &$form_state) {
       $this->searchSettings->set('active_plugins', $new_plugins);
       drupal_set_message($this->t('The active search plugins have been changed.'));
       $this->state->set('menu_rebuild_needed', TRUE);
-      \Drupal::cache('cache')->deleteTags(array('local_task' => 1));
+      $this->cache->deleteTags(array('local_task' => TRUE));
     }
     $this->searchSettings->save();
   }