diff --git a/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php b/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
index b309fe0815..c812178d29 100644
--- a/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
+++ b/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
@@ -5,6 +5,7 @@
 use Drupal\Core\Routing\EnhancerInterface;
 use Symfony\Cmf\Component\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Route;
 
 /**
  * Enhancer to add a wrapping controller for _form routes.