diff --git a/core/modules/simpletest/lib/Drupal/simpletest/Form/SimpletestSettingsForm.php b/core/modules/simpletest/lib/Drupal/simpletest/Form/SimpletestSettingsForm.php
index fa94f33..cce1a8a 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/Form/SimpletestSettingsForm.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/Form/SimpletestSettingsForm.php
@@ -26,8 +26,8 @@ public function getFormID() {
   public function buildForm(array $form, array &$form_state) {
     $config = $this->configFactory->get('simpletest.settings');
     $form['general'] = array(
-    '#type' => 'details',
-    '#title' => t('General'),
+      '#type' => 'details',
+      '#title' => t('General'),
     );
     $form['general']['simpletest_clear_results'] = array(
       '#type' => 'checkbox',
@@ -86,10 +86,11 @@ public function buildForm(array $form, array &$form_state) {
    * Implements \Drupal\Core\Form\FormInterface::validateForm().
    */
   public function validateForm(array &$form, array &$form_state) {
+    $config = $this->configFactory->get('simpletest.settings');
     // If a username was provided but a password wasn't, preserve the existing
     // password.
     if (!empty($form_state['values']['simpletest_httpauth_username']) && empty($form_state['values']['simpletest_httpauth_password'])) {
-      $form_state['values']['simpletest_httpauth_password'] = config('simpletest.settings')->get('httpauth.password');
+      $form_state['values']['simpletest_httpauth_password'] = $config->get('httpauth.password');
     }
 
     // If a password was provided but a username wasn't, the credentials are