diff --git a/composer.json b/composer.json
index 9caff30..343ffd1 100644
--- a/composer.json
+++ b/composer.json
@@ -55,6 +55,7 @@
         "phpstan/phpstan-phpunit": "^2.0",
         "phpstan/phpstan-symfony": "^2.0",
         "phpunit/phpunit": "^9.6",
+        "symfony/browser-kit": "^7.4",
         "symfony/phpunit-bridge": "^7.4"
     },
     "scripts": {
diff --git a/src/bundle/Controller/UserRegisterController.php b/src/bundle/Controller/UserRegisterController.php
index 5ce6f7b..986043d 100644
--- a/src/bundle/Controller/UserRegisterController.php
+++ b/src/bundle/Controller/UserRegisterController.php
@@ -85,6 +85,7 @@ public function registerFromInvitationAction(Request $request): Response|FormVie
             [
                 'languageCode' => $language,
                 'mainLanguageCode' => $language,
+                'struct' => $data,
                 'intent' => 'invitation',
             ]
         );
diff --git a/tests/integration/Controller/UserRegisterControllerTest.php b/tests/integration/Controller/UserRegisterControllerTest.php
new file mode 100644
index 0000000..4391be7
--- /dev/null
+++ b/tests/integration/Controller/UserRegisterControllerTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * @copyright Copyright (C) Ibexa AS. All rights reserved.
+ * @license For full copyright and license information view LICENSE file distributed with this source code.
+ */
+declare(strict_types=1);
+
+namespace Ibexa\Tests\Integration\User\Controller;
+
+use Ibexa\ContentForms\Form\ActionDispatcher\UserDispatcher;
+use Ibexa\Contracts\User\Invitation\InvitationCreateStruct;
+use Ibexa\Tests\Integration\User\IbexaKernelTestCase;
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * @covers \Ibexa\Bundle\User\Controller\UserRegisterController::registerFromInvitationAction
+ */
+final class UserRegisterControllerTest extends IbexaKernelTestCase
+{
+    private const string INVITEE_EMAIL = 'invitee@ibexa.co';
+
+    public function testRegisterFromInvitationRespondsWithOk(): void
+    {
+        self::setAdministratorUser();
+        self::getContainer()->set(UserDispatcher::class, new UserDispatcher());
+
+        // InvitationService::isValid() compares against the SiteAccess the request resolves to
+        // which is the default one, not what SiteAccessServiceInterface::getCurrent() returns here
+        $siteAccess = self::getContainer()->getParameter('ibexa.site_access.default');
+        self::assertIsString($siteAccess);
+
+        $invitation = self::getInvitationService()->createInvitation(
+            new InvitationCreateStruct(self::INVITEE_EMAIL, $siteAccess)
+        );
+
+        $kernel = self::$kernel;
+        self::assertNotNull($kernel);
+
+        $client = new KernelBrowser($kernel);
+        $client->request('GET', '/from-invite/register/' . $invitation->getHash());
+
+        self::assertSame(Response::HTTP_OK, $client->getResponse()->getStatusCode());
+    }
+
+    protected function tearDown(): void
+    {
+        // Database is imported once per run and there is no per-test rollback, so without this the
+        // invitation survives into InvitationServiceTest, which asserts absolute findInvitations()
+        // counts and fails
+        $connection = self::getDoctrineConnection();
+        $connection->executeStatement(
+            'DELETE FROM ibexa_user_invitation_assignment WHERE invitation_id IN '
+            . '(SELECT id FROM ibexa_user_invitation WHERE email = :email)',
+            ['email' => self::INVITEE_EMAIL]
+        );
+        $connection->delete('ibexa_user_invitation', ['email' => self::INVITEE_EMAIL]);
+    }
+}
diff --git a/tests/integration/IbexaTestKernel.php b/tests/integration/IbexaTestKernel.php
index d328e52..2403fc6 100644
--- a/tests/integration/IbexaTestKernel.php
+++ b/tests/integration/IbexaTestKernel.php
@@ -63,6 +63,14 @@ public function registerContainerConfiguration(LoaderInterface $loader): void
 
             self::createSyntheticService($container);
 
+            $container->loadFromExtension('ibexa', [
+                'system' => [
+                    'default' => [
+                        'languages' => ['eng-GB'],
+                    ],
+                ],
+            ]);
+
             $container->loadFromExtension('framework', [
                 'router' => [
                     'resource' => __DIR__ . '/Resources/routing.yaml',