diff --git a/piwigo/docker-compose.yml b/piwigo/docker-compose.yml
index 4fa4091..156ccf3 100644
--- a/piwigo/docker-compose.yml
+++ b/piwigo/docker-compose.yml
@@ -15,8 +15,8 @@ services:
     - traefik.http.routers.${ROUTER_NAME}-router.entrypoints=${ENTRYPOINT}
     - traefik.http.routers.${ROUTER_NAME}-router.rule=Host(`${APP_HOST}`)
     - traefik.http.routers.${ROUTER_NAME}-router.tls=true
-  networks:
-    - traefik_web
+    networks:
+      - traefik_web
 volumes:
   piwigo_gallery: {}
   piwigo_config: {}