diff --git a/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Form/NestedEntityTestForm.php b/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Form/NestedEntityTestForm.php
index 2f20711..1856ebb 100644
--- a/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Form/NestedEntityTestForm.php
+++ b/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Form/NestedEntityTestForm.php
@@ -63,8 +63,8 @@ public function validateForm(array &$form, array &$form_state) {
     $form_state['form_display_1']->validateFormValues($entity_1, $form, $form_state);
 
     $entity_2 = $form_state['entity_2'];
-    $form_state['form_display_2']->extractFormValues($entity_2, $form, $form_state);
-    $form_state['form_display_2']->validateFormValues($entity_2, $form, $form_state);
+    $form_state['form_display_2']->extractFormValues($entity_2, $form['entity_2'], $form_state);
+    $form_state['form_display_2']->validateFormValues($entity_2, $form['entity_2'], $form_state);
   }
 
   /**