diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 9f51812..209fd68 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -738,6 +738,7 @@ function language_negotiation_include() {
  * Implements hook_modules_enabled().
  */
 function language_modules_enabled($modules) {
+  include_once DRUPAL_ROOT . '/core/includes/language.inc';
   // Load configurability options from configuration.
   $configurable = config('system.language.types')->get('configurable');
   language_types_set($configurable);
diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
index 4244c13..65167f8 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
@@ -543,7 +543,7 @@ function testGetLibrary() {
     $this->assertTrue(isset($libraries['jquery.farbtastic']), 'Retrieved all module libraries.');
     // Retrieve all libraries for a module not implementing hook_library_info().
     // Note: This test installs language module.
-    $libraries = drupal_get_library('language');
+    $libraries = drupal_get_library('dblog');
     $this->assertEqual($libraries, array(), 'Retrieving libraries from a module not implementing hook_library_info() returns an emtpy array.');
 
     // Retrieve a specific library by module and name.