diff --git a/auth/auth.js b/auth/auth.js
index e7b58d6172..c27163fec4 100644
--- a/auth/auth.js
+++ b/auth/auth.js
@@ -54,7 +54,7 @@ function authCloudExplicit () {
 
   // Instantiates a client. Explicitly use service account credentials by
   // specifying the private key file. All clients in google-cloud-node have this
-  // helper, see https://googlecloudplatform.github.io/google-cloud-node/#/docs/google-cloud/latest/guides/authentication
+  // helper, see https://github.com/GoogleCloudPlatform/google-cloud-node/blob/master/docs/authentication.md
   const storage = new Storage({
     keyFilename: '/path/to/keyfile.json'
   });