diff --git a/glances/docker-compose.yml b/glances/docker-compose.yml
index ab2251c..67f36e9 100644
--- a/glances/docker-compose.yml
+++ b/glances/docker-compose.yml
@@ -17,7 +17,7 @@ services:
       - 61208
     labels:
       - "traefik.enable=true"    
-      - traefik.http.routers.glances.rule=Host(${SITE})
+      - traefik.http.routers.glances.rule=Host('${SITE}')
       - traefik.http.routers.glances.entrypoints=web      
       - traefik.http.services.glances.loadbalancer.server.port=61208