diff --git a/core/admin/mailu/configuration.py b/core/admin/mailu/configuration.py
index 9761027f..8ccafce2 100644
--- a/core/admin/mailu/configuration.py
+++ b/core/admin/mailu/configuration.py
@@ -18,7 +18,7 @@ DEFAULT_CONFIG = {
     'DB_PW': None,
     'DB_HOST': 'database',
     'DB_NAME': 'mailu',
-    'SQLITE_DATABASE_FILE':'data/main.db'
+    'SQLITE_DATABASE_FILE':'data/main.db',
     'SQLALCHEMY_DATABASE_URI': 'sqlite:////data/main.db',
     'SQLALCHEMY_TRACK_MODIFICATIONS': False,
     # Statistics management