diff --git a/core/modules/config/src/Form/ConfigSync.php b/core/modules/config/src/Form/ConfigSync.php
index 30e9d97..d9dd7a9 100644
--- a/core/modules/config/src/Form/ConfigSync.php
+++ b/core/modules/config/src/Form/ConfigSync.php
@@ -341,10 +341,10 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
         $batch = array(
           'operations' => array(),
           'finished' => array(get_class($this), 'finishBatch'),
-          'title' => t('Synchronizing configuration'),
-          'init_message' => t('Starting configuration synchronization.'),
-          'progress_message' => t('Completed step @current of @total.'),
-          'error_message' => t('Configuration synchronization has encountered an error.'),
+          'title' => $this->t('Synchronizing configuration'),
+          'init_message' => $this->t('Starting configuration synchronization.'),
+          'progress_message' => $this->t('Completed step @current of @total.'),
+          'error_message' => $this->t('Configuration synchronization has encountered an error.'),
           'file' => __DIR__ . '/../../config.admin.inc',
         );
         foreach ($sync_steps as $sync_step) {
diff --git a/core/modules/config/tests/config_test/src/ConfigTestForm.php b/core/modules/config/tests/config_test/src/ConfigTestForm.php
index 14f4bef..034764b 100644
--- a/core/modules/config/tests/config_test/src/ConfigTestForm.php
+++ b/core/modules/config/tests/config_test/src/ConfigTestForm.php
@@ -109,7 +109,7 @@ public function form(array $form, FormStateInterface $form_state) {
     );
     $form['size_wrapper']['size_submit'] = array(
       '#type' => 'submit',
-      '#value' => t('Change size'),
+      '#value' => $this->t('Change size'),
       '#attributes' => array(
         'class' => array('js-hide'),
       ),
@@ -129,7 +129,7 @@ public function form(array $form, FormStateInterface $form_state) {
 
     $form['langcode'] = array(
       '#type' => 'language_select',
-      '#title' => t('Language'),
+      '#title' => $this->t('Language'),
       '#languages' => LanguageInterface::STATE_ALL,
       '#default_value' => $entity->language()->getId(),
     );
diff --git a/core/modules/config/tests/config_test/src/ConfigTestListBuilder.php b/core/modules/config/tests/config_test/src/ConfigTestListBuilder.php
index 4680ea2..9ed983e 100644
--- a/core/modules/config/tests/config_test/src/ConfigTestListBuilder.php
+++ b/core/modules/config/tests/config_test/src/ConfigTestListBuilder.php
@@ -21,8 +21,8 @@ class ConfigTestListBuilder extends ConfigEntityListBuilder {
    * {@inheritdoc}
    */
   public function buildHeader() {
-    $header['label'] = t('Label');
-    $header['id'] = t('Machine name');
+    $header['label'] = $this->t('Label');
+    $header['id'] = $this->t('Machine name');
     return $header + parent::buildHeader();
   }