diff --git a/volumes/conf.d/mail.zinomedia.de.conf b/volumes/conf.d/mail.zinomedia.de.conf
index 33ed218..5bb12c7 100644
--- a/volumes/conf.d/mail.zinomedia.de.conf
+++ b/volumes/conf.d/mail.zinomedia.de.conf
@@ -8,7 +8,7 @@ server {
     error_log /var/log/nginx/error.log error;
 
     ssl_certificate /etc/letsencrypt/live/mail.zinomedia.de/cert.pem;
-    ssl_certificate_key /etc/letsencrypt/live/mail.zinomedia.de/key.pem;
+    ssl_certificate_key /etc/letsencrypt/live/mail.zinomedia.de/privkey.pem;
     ssl_session_timeout 1d;
     ssl_session_cache shared:SSL:50m;
     ssl_session_tickets off;