diff --git a/modules/services/nginx.nix b/modules/services/nginx.nix
index 7667eaa..3fd85d8 100644
--- a/modules/services/nginx.nix
+++ b/modules/services/nginx.nix
@@ -27,7 +27,7 @@
             more_set_headers 'X-XSS-Protection 1; mode=block';
             #  add_header X-Frame-Options 'ALLOW-FROM kopatz.ddns.net';
             more_set_headers 'X-Content-Type-Options nosniff';
-            more_set_headers "Content-Security-Policy: frame-ancestors 'https://kopatz.ddns.net'";
+            more_set_headers "Content-Security-Policy: frame-ancestors https://kopatz.ddns.net";
             more_set_headers "Referrer-Policy: same-origin";
             more_set_headers "Permissions-Policy: geolocation=(), microphone=()";
         '';