diff --git a/lib/adapters/http.js b/lib/adapters/http.js
index 7d11657..ef4e73d 100644
--- a/lib/adapters/http.js
+++ b/lib/adapters/http.js
@@ -50,7 +50,7 @@ module.exports = function httpAdapter(resolve, reject, config) {
   var options = {
     host: parsed.hostname,
     port: parsed.port,
-    path: buildUrl(parsed.path, config.params).replace(/^\?/, ''),
+    path: buildUrl(parsed.path, config.params, config.paramsSerializer).replace(/^\?/, ''),
     method: config.method,
     headers: headers,
     agent: config.agent