diff -u b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
--- b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
@@ -50,7 +50,7 @@
   /**
    * The mocked language manager.
    *
-   * @var \Drupal\config_translation\ConfigMapperInterface|\PHPUnit_Framework_MockObject_MockObject
+   * @var \Drupal\Core\Language\LanguageManagerInterface $language_manager|\PHPUnit_Framework_MockObject_MockObject
    */
   protected $languageManager;
 
@@ -82,7 +82,7 @@
       ->disableOriginalConstructor()
       ->getMock();
 
-    $this->languageManager = $this->getMock('Drupal\config_translation\ConfigMapperInterface');
+    $this->languageManager = $this->getMock('Drupal\Core\Language\LanguageManagerInterface');
 
     $this->configEntityMapper = new ConfigEntityMapper(
       'configurable_language',
diff -u b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
--- b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
@@ -84,7 +84,7 @@
   /**
    * The mocked language manager.
    *
-   * @var \Drupal\config_translation\ConfigMapperInterface|\PHPUnit_Framework_MockObject_MockObject
+   * @var \Drupal\Core\Language\LanguageManagerInterface $language_manager|\PHPUnit_Framework_MockObject_MockObject
    */
   protected $languageManager;
 
@@ -120,7 +120,7 @@
       ->with('system.site_information_settings')
       ->will($this->returnValue($this->baseRoute));
 
-    $this->languageManager = $this->getMock('Drupal\config_translation\ConfigMapperInterface');
+    $this->languageManager = $this->getMock('Drupal\Core\Language\LanguageManagerInterface');
 
     $this->configNamesMapper = new TestConfigNamesMapper(
       'system.site_information_settings',
diff -u b/core/modules/language/src/LanguageListBuilder.php b/core/modules/language/src/LanguageListBuilder.php
--- b/core/modules/language/src/LanguageListBuilder.php
+++ b/core/modules/language/src/LanguageListBuilder.php
@@ -60,7 +60,6 @@
     $this->languageManager = $language_manager;
   }
 
-
   /**
    * {@inheritdoc}
    */