diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/VocabularyFormController.php b/core/modules/taxonomy/lib/Drupal/taxonomy/VocabularyFormController.php
index 724697044d4b5f2d881626e9f14dfe1a1a8aa745..b6243516985f8edbed830ec7aef94c18bea78deb 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/VocabularyFormController.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/VocabularyFormController.php
@@ -20,7 +20,12 @@ class VocabularyFormController extends EntityFormController {
    */
   public function form(array $form, array &$form_state) {
     $vocabulary = $this->entity;
-    $form['#title'] = $this->t('Edit vocabulary');
+    if ($vocabulary->isNew()) {
+      $form['#title'] = $this->t('Add vocabulary');
+    }
+    else {
+      $form['#title'] = $this->t('Edit vocabulary');
+    }
 
     $form['name'] = array(
       '#type' => 'textfield',