diff --git a/lib/src/services/services.dart b/lib/src/services/services.dart
index 8560314..025a919 100644
--- a/lib/src/services/services.dart
+++ b/lib/src/services/services.dart
@@ -7,7 +7,7 @@ import 'package:mongo_dart/mongo_dart.dart';
 import 'user.dart' as User;
 
 configureServer(Angel app) async {
-  Db db = new Db(app.properties['mongo_db']);
+  Db db = new Db(app.mongo_db);
   await db.open();
 
   await app.configure(User.configureServer(db));