diff --git a/monica/config.yaml b/monica/config.yaml
index 94560fdb1..db65cda2b 100644
--- a/monica/config.yaml
+++ b/monica/config.yaml
@@ -77,7 +77,7 @@ ports:
 ports_description:
   8080/tcp: webui
 schema: {
-  "database": "list(sqlite|MariaDB_addon|Mysql_external)"
+  "database": "list(sqlite|MariaDB_addon|Mysql_external)",
   "APP_KEY": "str?",
   "DB_DATABASE": "str?",
   "DB_HOST": "str?",