diff --git a/lib/cartodb/server.js b/lib/cartodb/server.js
index 3bfad338..27fd8fd9 100644
--- a/lib/cartodb/server.js
+++ b/lib/cartodb/server.js
@@ -257,8 +257,6 @@ module.exports = function(serverOptions) {
     ];
 
     app.sendResponse = function(res, args) {
-        var that = this;
-
         var statusCode;
         if ( res._windshaftStatusCode ) {
             // Added by our override of sendError
@@ -294,7 +292,7 @@ module.exports = function(serverOptions) {
                 }
 //console.log("Adding cache channel to route\n" + req.route.path + " not matching any in:\n" +
 // mapCreateRoutes.join("\n"));
-                app.addCacheChannel(that, req, this);
+                app.addCacheChannel(req, this);
             },
             function sendResponse(err/*, added*/) {
                 if ( err ) console.log(err + err.stack);
@@ -579,7 +577,7 @@ module.exports = function(serverOptions) {
     // @param cb function(err, channel) will be called when ready.
     //           the channel parameter will be null if nothing was added
     //
-    app.addCacheChannel = function(app, req, cb) {
+    app.addCacheChannel = function(req, cb) {
         // skip non-GET requests, or requests for which there's no response
         if ( req.method != 'GET' || ! req.res ) { cb(null, null); return; }
         if (req.profiler) {