.../ckeditor/lib/Drupal/ckeditor/Plugin/ckeditor/plugin/Internal.php  |    1 +
 1 file changed, 1 insertion(+)

diff --git a/core/modules/ckeditor/lib/Drupal/ckeditor/Plugin/ckeditor/plugin/Internal.php b/core/modules/ckeditor/lib/Drupal/ckeditor/Plugin/ckeditor/plugin/Internal.php
index 51fa9c5..22745e1 100644
--- a/core/modules/ckeditor/lib/Drupal/ckeditor/Plugin/ckeditor/plugin/Internal.php
+++ b/core/modules/ckeditor/lib/Drupal/ckeditor/Plugin/ckeditor/plugin/Internal.php
@@ -45,6 +45,7 @@ public function getFile() {
   public function getConfig(Editor $editor) {
     // Reasonable defaults that provide expected basic behavior.
     $config = array(
+      'customConfig' => '', // Don't load CKEditor's config.js file.
       'pasteFromWordPromptCleanup' => TRUE,
       'indentClasses' => array('indent1', 'indent2', 'indent3'),
       'justifyClasses' => array('align-left', 'align-center', 'align-right', 'align-justify'),