diff -u b/core/modules/ckeditor/js/ckeditor.language.admin.js b/core/modules/ckeditor/js/ckeditor.language.admin.js
--- b/core/modules/ckeditor/js/ckeditor.language.admin.js
+++ b/core/modules/ckeditor/js/ckeditor.language.admin.js
@@ -1,4 +1,4 @@
-(function ($, Drupal, drupalSettings) {
+(function ($, Drupal) {
 
   "use strict";
 
@@ -16 +16 @@
-})(jQuery, Drupal, drupalSettings);
+})(jQuery, Drupal);
diff -u b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
--- b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
+++ b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
@@ -115,8 +115,8 @@
         'all' => t('All @count languages', array('@count' => sizeof($predefined_languages))),
       ),
       '#default_value' => $config['list_type'],
-      '#description' => t('The list of languages to show in the language dropdown. The basic list will only show the <a href="@url">six official languages of the UN</a>. The extended list will show all @count languages that are available in Drupal.', array(
-        '@url' => Url::fromUri('http://www.un.org/en/aboutun/languages.shtml/'),
+      '#description' => $this->t('The list of languages to show in the language dropdown. The basic list will only show the <a href="@url">six official languages of the UN</a>. The extended list will show all @count languages that are available in Drupal.', array(
+        '@url' => Url::fromUri('http://www.un.org/en/aboutun/languages.shtml/')->toString(),
         '@count' => sizeof($predefined_languages),
       )),
       '#attached' => array(
diff -u b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
--- b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
@@ -130,6 +130,7 @@
     $editor = entity_load('editor', 'filtered_html');
     $this->assertTrue($editor instanceof Editor, 'An Editor config entity exists now.');
     $this->assertIdentical($expected_settings, $editor->getSettings(), 'The Editor config entity has the correct settings.');
+
     // Configure the Styles plugin, and ensure the updated settings are saved.
     $this->drupalGet('admin/config/content/formats/manage/filtered_html');
     $edit = array(
diff -u b/core/modules/ckeditor/src/Tests/CKEditorTest.php b/core/modules/ckeditor/src/Tests/CKEditorTest.php
--- b/core/modules/ckeditor/src/Tests/CKEditorTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorTest.php
@@ -437,2 +437,3 @@
   }
+
 }