diff --git a/lib/Listener/BeforeTemplateRenderedListener.php b/lib/Listener/BeforeTemplateRenderedListener.php
index ca20eb9d7a..2df36907b2 100644
--- a/lib/Listener/BeforeTemplateRenderedListener.php
+++ b/lib/Listener/BeforeTemplateRenderedListener.php
@@ -7,6 +7,7 @@
  */
 namespace OCA\Richdocuments\Listener;
 
+use OCA\Richdocuments\AppInfo\Application;
 use OCA\Richdocuments\Service\CapabilitiesService;
 use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent;
 use OCP\EventDispatcher\Event;
@@ -24,7 +25,7 @@ public function handle(Event $event): void {
 			return;
 		}
 
-		if ($this->capabilitiesService->hasWASMSupport()) {
+		if ($this->capabilitiesService->hasWASMSupport() && $event->getResponse()->getApp() === Application::APPNAME) {
 			$event->getResponse()->addHeader('Cross-Origin-Opener-Policy', 'same-origin');
 			$event->getResponse()->addHeader('Cross-Origin-Embedder-Policy', 'require-corp');
 		}