diff --git a/src/Zikula/CoreBundle/EventListener/ClickjackProtectionListener.php b/src/Zikula/CoreBundle/EventListener/ClickjackProtectionListener.php
index c5b0cf33a5..ce686932e6 100644
--- a/src/Zikula/CoreBundle/EventListener/ClickjackProtectionListener.php
+++ b/src/Zikula/CoreBundle/EventListener/ClickjackProtectionListener.php
@@ -55,7 +55,6 @@ public function onKernelResponse(ResponseEvent $event): void
         $response = $event->getResponse();
 
         $response->headers->set('X-Frame-Options', $this->xFrameOptions);
-        //$response->headers->set('X-Content-Security-Policy', "frame-ancestors 'self'");
         $response->headers->set('X-XSS-Protection', '1');
     }
 }