diff --git a/util/assign.js b/util/assign.js
index 1695f4b3a..38a421f3f 100644
--- a/util/assign.js
+++ b/util/assign.js
@@ -1,10 +1,4 @@
 // This exists so I'm only saving it once.
 "use strict"
 
-var hasOwn = require("./hasOwn")
-
-module.exports = Object.assign || function(target, source) {
-	for (var key in source) {
-		if (hasOwn.call(source, key)) target[key] = source[key]
-	}
-}
+module.exports = Object.assign