diff --git a/roles/docker-mailu/templates/deploy-letsencrypt-mailu.sh.j2 b/roles/docker-mailu/templates/deploy-letsencrypt-mailu.sh.j2
index 59cce521..34c1ce08 100644
--- a/roles/docker-mailu/templates/deploy-letsencrypt-mailu.sh.j2
+++ b/roles/docker-mailu/templates/deploy-letsencrypt-mailu.sh.j2
@@ -1,4 +1,4 @@
 #!/bin/sh
 cp /etc/letsencrypt/live/{{domain}}/privkey.pem /etc/mailu/certs/key.pem || exit 1
 cp /etc/letsencrypt/live/{{domain}}/fullchain.pem /etc/mailu/certs/cert.pem || exit 1
-docker exec mailu_front_1 nginx -s reload
+docker exec {{mailu_front_container_name}} nginx -s reload
diff --git a/roles/docker-mailu/vars/main.yml b/roles/docker-mailu/vars/main.yml
new file mode 100644
index 00000000..1989bbe9
--- /dev/null
+++ b/roles/docker-mailu/vars/main.yml
@@ -0,0 +1 @@
+mailu_front_container_name: "mailu-front-1"