diff --git a/lib/tasks/server/middleware/serve-files/index.js b/lib/tasks/server/middleware/serve-files/index.js
index 65ef99017a..767c53a825 100644
--- a/lib/tasks/server/middleware/serve-files/index.js
+++ b/lib/tasks/server/middleware/serve-files/index.js
@@ -23,7 +23,7 @@ ServeFilesAddon.prototype.serverMiddleware = function(options) {
 
   debug('serverMiddleware: output: %s baseURL: %s', options.outputPath, baseURL);
 
-  app.use(function(req, res, next) {
+  app.use(function ServeFiles(req, res, next) {
     var oldURL = req.url;
     var url = req.serveUrl || req.url;
     debug('serving: %s', url);