diff --git a/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js b/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js
index 7ae7355..c825c27 100644
--- a/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js
+++ b/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js
@@ -167,7 +167,7 @@ module.exports = {
       }
     }
 
-    (options.buffer || req).pipe(proxyReq);
+    (options.buffer(req) || req).pipe(proxyReq);
 
     proxyReq.on('response', function(proxyRes) {
       if(server) { server.emit('proxyRes', proxyRes, req, res); }