diff --git a/app/controllers/generic_controller.js b/app/controllers/generic_controller.js
index b0548c9b..7bf7d8c4 100644
--- a/app/controllers/generic_controller.js
+++ b/app/controllers/generic_controller.js
@@ -2,6 +2,12 @@
 
 module.exports = class GenericController {
     route (app) {
-        app.options('*', (req, res) => res.end());
+        app.options('*', emptyResponse());
     }
 };
+
+function emptyResponse () {
+    return function emptyResponseMiddleware (req, res) {
+        res.end();
+    };
+}