diff --git a/core/lib/Drupal/Core/Form/FormBuilder.php b/core/lib/Drupal/Core/Form/FormBuilder.php
index be000dcc25..b50fe99428 100644
--- a/core/lib/Drupal/Core/Form/FormBuilder.php
+++ b/core/lib/Drupal/Core/Form/FormBuilder.php
@@ -84,11 +84,15 @@ class FormBuilder implements FormBuilderInterface, FormValidatorInterface, FormS
   protected $themeManager;
 
   /**
+   * The form validator.
+   *
    * @var \Drupal\Core\Form\FormValidatorInterface
    */
   protected $formValidator;
 
   /**
+   * The form submitter.
+   *
    * @var \Drupal\Core\Form\FormSubmitterInterface
    */
   protected $formSubmitter;