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..5d2335c 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\Cache;
 use Drupal\Core\Config\ConfigFactory;
 use Drupal\Core\Config\Context\ContextInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
@@ -263,7 +264,7 @@ 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));
+      Cache::deleteTags(array('local_task' => TRUE));
     }
     $this->searchSettings->save();
   }