diff --git a/contrib/nginx/zammad_ssl.conf b/contrib/nginx/zammad_ssl.conf
index eb74cd361..e7bb4c64b 100644
--- a/contrib/nginx/zammad_ssl.conf
+++ b/contrib/nginx/zammad_ssl.conf
@@ -56,7 +56,7 @@ server {
   ssl_stapling on;
   ssl_stapling_verify on;
 
-  ssl_trusted_certificate /etc/nginx/ssl/your_cert.crt;
+  ssl_trusted_certificate /etc/nginx/ssl/lets-encrypt-x3-cross-signed.pem;
 
   resolver 8.8.8.8 8.8.4.4;