diff --git a/compose.yml b/compose.yml
index a7b3a43..46eda10 100644
--- a/compose.yml
+++ b/compose.yml
@@ -50,8 +50,7 @@ services:
       - db_password
     command: --max-allowed-packet=64MB
     deploy:
-      labels:
-        - coop-cloud.${STACK_NAME}.db.version=5.7-dce7f54b
+      labels: ['coop-cloud.${STACK_NAME}.db.version=5.7-dce7f54b']
 volumes:
   mariadb:
   matomo_config: