diff --git a/nginx/mailcow.conf b/nginx/mailcow.conf
index 6334bc3..920aacc 100644
--- a/nginx/mailcow.conf
+++ b/nginx/mailcow.conf
@@ -66,11 +66,9 @@ server {
 
   include /etc/nginx/snippets/ssl.conf;
   ssl_trusted_certificate /opt/mailcow-dockerized/data/assets/ssl/cert.pem;
-
-  add_header X-XSS-Protection "1; mode=block";
-  add_header Referrer-Policy "strict-origin";
+  
   add_header Content-Security-Policy "upgrade-insecure-requests";
-  add_header Strict-Transport-Security "max-age=31536000";  
+    
   include /etc/nginx/snippets/letsencrypt.conf;
 
   location / {