diff --git a/doctrine/registration_form.rst b/doctrine/registration_form.rst
index 0d18d4dea2d..43c6eac5753 100644
--- a/doctrine/registration_form.rst
+++ b/doctrine/registration_form.rst
@@ -152,7 +152,7 @@ saves the user::
         public function register(Request $request, UserPasswordEncoderInterface $passwordEncoder): Response
         {
             $user = new User();
-            $form = $this->createForm(RegistrationFormType::class);
+            $form = $this->createForm(RegistrationFormType::class, $user);
             $form->handleRequest($request);
 
             if ($form->isSubmitted() && $form->isValid()) {