diff --git a/server/index.js b/server/index.js
index e2a17f3ea..cf114c7ae 100644
--- a/server/index.js
+++ b/server/index.js
@@ -142,7 +142,7 @@ app.use(calendarRoute);
 app.use(translationsRoute);
 app.use(subscriptionRoute);
 
-app.use(function (err, req, res) {
+app.use(function (err, req, res, _next) {
     console.error(formatError(err, req));
     res.status(500).send('Unexpected server error');
     req.db.close();