diff --git a/lib/response.js b/lib/response.js
index 04d4d7f..0586b19 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -33,6 +33,3 @@ function Response(body, opts) {
 }
 
 Response.prototype = Object.create(Body.prototype);
-
-// expose Promise
-Response.Promise = global.Promise;