diff --git a/Classes/Finisher/RedirectFinisher.php b/Classes/Finisher/RedirectFinisher.php
index a4ecbd1..1bbc473 100644
--- a/Classes/Finisher/RedirectFinisher.php
+++ b/Classes/Finisher/RedirectFinisher.php
@@ -19,6 +19,7 @@ public function redirectToUriFinisher(): void
         $redirectService = GeneralUtility::makeInstance(RedirectUriService::class, $this->contentObject);
         $uri = $redirectService->getRedirectUri();
         if (!empty($uri) && $this->isRedirectEnabled()) {
+            header('Content-Type: application/json');
             echo json_encode([
                 'redirectUrl' => $uri,
                 'statusCode' => 303,