diff --git a/proxy/docker-compose.yaml b/proxy/docker-compose.yaml
index 04a0016..f8ff06d 100644
--- a/proxy/docker-compose.yaml
+++ b/proxy/docker-compose.yaml
@@ -44,7 +44,7 @@ services:
       - web
     labels:
       - "traefik.enable=true"
-      - "traefik.http.routers.whoami.rule=Host(`whoami.${DOMAIN}`)"
+      - "traefik.http.routers.whoami.rule=Host(`whoami.${HOSTNAME}`)"
       - "traefik.http.routers.whoami.entrypoints=web"
       - "traefik.http.services.whoami.loadbalancer.server.port=80"
       - "docker.group=proxy"