diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldSettingsForm.php b/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldSettingsForm.php
index f40100a..417b251 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldSettingsForm.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldSettingsForm.php
@@ -11,6 +11,7 @@
 use Drupal\Core\ControllerInterface;
 use Drupal\field\Plugin\Core\Entity\FieldInstance;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\field\FieldInfo;
 
 /**
  * Provides a form for the field settings edit page.