diff --git a/core/modules/language/tests/src/Functional/ConfigurableLanguageManagerTest.php b/core/modules/language/tests/src/Functional/ConfigurableLanguageManagerTest.php
index 5296bc54eb..08aacecd41 100644
--- a/core/modules/language/tests/src/Functional/ConfigurableLanguageManagerTest.php
+++ b/core/modules/language/tests/src/Functional/ConfigurableLanguageManagerTest.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\language\Functional;
 
+use Drupal\Core\Cache\Cache;
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\language\Entity\ContentLanguageSettings;
 use Drupal\node\Entity\Node;
@@ -77,8 +78,6 @@ protected function setUp() {
     // Load the Spanish Node page once, to register the translatable string.
     $this->drupalGet('/es/node/1');
 
-    drupal_flush_all_caches();
-
     // Translate the Powered by string.
     /** @var \Drupal\locale\StringStorageInterface $string_storage */
     $string_storage = \Drupal::getContainer()->get('locale.storage');
@@ -90,6 +89,8 @@ protected function setUp() {
       'language' => 'es',
       'translation' => 'Funciona con ...',
     ])->save();
+    // Invalidate caches so that the new translation will be used.
+    Cache::invalidateTags(['rendered', 'locale']);
   }
 
   /**