diff --git a/lib/core/util.js b/lib/core/util.js
index 23e94651562..0d84c203a94 100644
--- a/lib/core/util.js
+++ b/lib/core/util.js
@@ -942,8 +942,10 @@ function getProtocolFromUrlString (urlString) {
   return urlString.slice(0, urlString.indexOf(':') + 1)
 }
 
-const kEnumerableProperty = Object.create(null)
-kEnumerableProperty.enumerable = true
+const kEnumerableProperty = {
+  __proto__: null,
+  enumerable: true
+}
 
 const normalizedMethodRecordsBase = {
   delete: 'DELETE',