diff --git a/docker-stack.yml b/docker-stack.yml
index 12785e4..0615517 100644
--- a/docker-stack.yml
+++ b/docker-stack.yml
@@ -287,6 +287,6 @@ networks:
     external: true
 volumes:
   certs:
-  ocis_data:
+  ocis-data:
   ocis-config:
   wopi-recovery: