diff --git a/core/modules/node/src/NodeForm.php b/core/modules/node/src/NodeForm.php
index a90a5a7..24eb1dd 100644
--- a/core/modules/node/src/NodeForm.php
+++ b/core/modules/node/src/NodeForm.php
@@ -161,7 +161,7 @@ public function form(array $form, FormStateInterface $form_state) {
     // Node author information for administrators.
     $form['author'] = [
       '#type' => 'details',
-      '#title' => t('Authoring information'),
+      '#title' => $this->t('Authoring information'),
       '#group' => 'advanced',
       '#attributes' => [
         'class' => ['node-form-author'],
@@ -184,7 +184,7 @@ public function form(array $form, FormStateInterface $form_state) {
     // Node options for administrators.
     $form['options'] = [
       '#type' => 'details',
-      '#title' => t('Promotion options'),
+      '#title' => $this->t('Promotion options'),
       '#group' => 'advanced',
       '#attributes' => [
         'class' => ['node-form-options'],
@@ -222,7 +222,7 @@ protected function actions(array $form, FormStateInterface $form_state) {
     $element['preview'] = [
       '#type' => 'submit',
       '#access' => $preview_mode != DRUPAL_DISABLED && ($node->access('create') || $node->access('update')),
-      '#value' => t('Preview'),
+      '#value' => $this->t('Preview'),
       '#weight' => 20,
       '#submit' => ['::submitForm', '::preview'],
     ];