diff --git a/apps/docs/pages/guides/auth.mdx b/apps/docs/pages/guides/auth.mdx
index ebc76e00d84..a7e261423f6 100644
--- a/apps/docs/pages/guides/auth.mdx
+++ b/apps/docs/pages/guides/auth.mdx
@@ -84,7 +84,7 @@ For deployments with Vercel, set the `SITE_URL` to your official site URL. Add t
 - `http://localhost:3000/**`
 - `https://*-username.vercel.app/**`
 
-Vercel provides an environment variable for the URL of the deployment called `NEXT_PUBLIC_VERCEL_URL`. See the [Vercel docs](https://vercel.com/docs/concepts/projects/environment-variables#system-environment-variables) for more details. You can use this variable to dynamically redirect depending on the environment:
+Vercel provides an environment variable for the URL of the deployment called `NEXT_PUBLIC_VERCEL_URL`. See the [Vercel docs](https://vercel.com/docs/concepts/projects/environment-variables#system-environment-variables) for more details. You can use this variable to dynamically redirect depending on the environment. You should also set the value of the environment variable called NEXT_PUBLIC_SITE_URL, this should be set to your site URL in production environment to ensure that redirects function correctly.
 
 ```js
 const getURL = () => {