diff --git a/mailu/mailu.env b/mailu/mailu.env
index 032f0ce..c1d9691 100644
--- a/mailu/mailu.env
+++ b/mailu/mailu.env
@@ -29,7 +29,7 @@ FRONT_ADDRESS=front
 WEBSERVICES=nginx
 
 # TLS
-TLS_FLAVOR=letsencrypt
+TLS_FLAVOR=mail
 CERTS_PATH=/certs/letsencrypt
 TLS_CERT_FILENAME=/certs/letsencrypt/live/mail.arti24.eu/fullchain.pem
 TLS_KEY_FILENAME=/certs/letsencrypt/live/mail.arti24.eu/privkey.pem