diff --git a/lib/node-http-proxy/routing-proxy.js b/lib/node-http-proxy/routing-proxy.js
index 863fea398..62a8cbe3a 100644
--- a/lib/node-http-proxy/routing-proxy.js
+++ b/lib/node-http-proxy/routing-proxy.js
@@ -163,10 +163,6 @@ RoutingProxy.prototype.close = function () {
   });
 };
 
-function getProto(req) {
-  return req.isSpdy ? 'https' : (req.connection.pair ? 'https' : 'http');
-}
-
 //
 // ### function proxyRequest (req, res, [port, host, paused])
 // #### @req {ServerRequest} Incoming HTTP Request to proxy.