diff --git a/swarm/firefox.yaml b/swarm/firefox.yaml
index fa1f3d1..84bb437 100644
--- a/swarm/firefox.yaml
+++ b/swarm/firefox.yaml
@@ -7,9 +7,9 @@ services:
     networks:
       - netgrimoire
     environment:
-      - PUID=1964
-      - PGID=1964
-      - TZ=America/Chicago
+      PUID: 1964
+      PGID: 1964
+      TZ: America/Chicago
     volumes:
       - /data/nfs/znas/Docker/firefox:/config:rw
     ports: