diff --git a/lib/middleware/tooBusy.js b/lib/middleware/tooBusy.js
index 13642c6c..65fa4b7d 100644
--- a/lib/middleware/tooBusy.js
+++ b/lib/middleware/tooBusy.js
@@ -9,7 +9,7 @@ toobusy.maxLag(config.responseMaxLag)
 
 module.exports = function (req, res, next) {
   if (toobusy()) {
-    response.errorServiceUnavailable(res)
+    response.errorServiceUnavailable(req, res)
   } else {
     next()
   }
diff --git a/lib/response.js b/lib/response.js
index 3e9cb891..0de8f9bc 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -53,7 +53,7 @@ function errorInternalError (req, res) {
   responseError(res, '500', 'Internal Error', 'wtf.')
 }
 
-function errorServiceUnavailable (res) {
+function errorServiceUnavailable (req, res) {
   res.status(503).send('I\'m busy right now, try again later.')
 }