diff --git a/docker-compose.yml b/docker-compose.yml
index 3bfa8d4..36b6cbb 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,7 +4,7 @@ services:
   traefik:
     image: traefik:1.7-alpine
     restart: always
-    command: --acme.email ${ACME_EMAIL} --docker.domain ${DOCKER_DOMAIN}
+    command: --acme.email=${ACME_EMAIL} --docker.domain=${DOCKER_DOMAIN}
     ports:
       - 80:80
       - 443:443