diff --git a/test/docker_mail/templates/docker-compose.yml b/test/docker_mail/templates/docker-compose.yml
index 4869d3e5c8a26b16bafc20c4ac9fb72e8046dec8..ab1c019219da1ccee57d8e1c9eabd26d641efe53 100644
--- a/test/docker_mail/templates/docker-compose.yml
+++ b/test/docker_mail/templates/docker-compose.yml
@@ -24,7 +24,7 @@ services:
       - TRAEFIK_VERSION=v2
     volumes:
       - "/srv/traefik:/traefik"
-      - "./certs:/output"
+      - "{{ basedir }}/mailu/certs:/output"
 
   # Core services
   front: