diff --git a/docker-compose.yml b/docker-compose.yml
index 8a25a1f..e3f0c98 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -15,7 +15,7 @@ services:
       - .env
     restart: always
     volumes:
-      - pmb_root:/root
+      - pmb-root:/root
       - "/etc/localtime:/etc/localtime:ro"
     networks:
       - pmb_mailnet
@@ -30,4 +30,4 @@ services:
 networks:
   pmb_mailnet:
 volumes:
-  pmb_root:
+  pmb-root: