diff --git a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
index 5b5943a..3e6d9c6 100644
--- a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
+++ b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
@@ -470,11 +470,11 @@ public function testContentCustomization() {
 
     // Check if configurability persisted.
     $config = \Drupal::config('language.types');
-    $this->assertTrue(in_array('language_interface', $config->get('configurable'), 'Interface language is configurable.'));
-    $this->assertTrue(in_array('language_content', $config->get('configurable'), 'Content language is configurable.'));
+    $this->assertTrue(in_array('language_interface', $config->get('configurable')), 'Interface language is configurable.');
+    $this->assertTrue(in_array('language_content', $config->get('configurable')), 'Content language is configurable.');
 
     // Ensure configuration was saved.
-    $this->assertFalse(in_array('language-url', $config->get('negotiation.language_content.enabled'), 'URL negotiation is not enabled for content.'));
-    $this->assertTrue(in_array('language-session', $config->get('negotiation.language_content.enabled'), 'Session negotiation is enabled for content.'));
+    $this->assertFalse(in_array('language-url', $config->get('negotiation.language_content.enabled')), 'URL negotiation is not enabled for content.');
+    $this->assertTrue(in_array('language-session', $config->get('negotiation.language_content.enabled')), 'Session negotiation is enabled for content.');
   }
 }