diff --git a/__swarm/bookstack/bookstack-swarm.yml b/__swarm/bookstack/bookstack-swarm.yml
index c6bf2c9..a80c27a 100644
--- a/__swarm/bookstack/bookstack-swarm.yml
+++ b/__swarm/bookstack/bookstack-swarm.yml
@@ -36,8 +36,8 @@ services:
     env_file:
     - stack.env
     environment:
-      PGID:0
-      PUID:0
+      PGID: 0
+      PUID: 0
     image: ${DOCKER_REGISTRY:-}lscr.io/linuxserver/mariadb
     volumes:
     - bookstack_db_data:/config