diff --git a/lib/_http_server.js b/lib/_http_server.js
index 649990baaca483..f2817742aead4e 100644
--- a/lib/_http_server.js
+++ b/lib/_http_server.js
@@ -331,7 +331,9 @@ ServerResponse.prototype.writeEarlyHints = function writeEarlyHints(hints, cb) {
 
   head += 'Link: ' + link + '\r\n';
 
-  for (const key of ObjectKeys(hints)) {
+  const keys = ObjectKeys(hints);
+  for (let i = 0; i < keys.length; i++) {
+    const key = keys[i];
     if (key !== 'link') {
       head += key + ': ' + hints[key] + '\r\n';
     }