diff --git a/examples/cms-builder-io/.env.local.example b/examples/cms-builder-io/.env.local.example
index e7e28ea094a5..3138915779a5 100644
--- a/examples/cms-builder-io/.env.local.example
+++ b/examples/cms-builder-io/.env.local.example
@@ -1,2 +1,2 @@
 # Copy this file as .env.local
-BUILDER_PUBLIC_KEY=
+NEXT_PUBLIC_BUILDER_API_KEY=
diff --git a/examples/cms-builder-io/README.md b/examples/cms-builder-io/README.md
index 1a474cda7906..f08e79b70755 100644
--- a/examples/cms-builder-io/README.md
+++ b/examples/cms-builder-io/README.md
@@ -33,7 +33,7 @@ cd cms-builder-io-app
 builder create -k [private-key] -n [space-name] -d
 ```
 
-This command when done it'll print your new space's public api key, copy it and add as the value for `BUILDER_PUBLIC_KEY` into the .env files (`.env.production` and `.env.development`)
+This command when done it'll print your new space's public api key, copy it and add as the value for `NEXT_PUBLIC_BUILDER_API_KEY` into the .env files (`.env.production` and `.env.development`)
 
 ```
 BUILDER_PUBLIC_KEY=...
diff --git a/examples/cms-builder-io/lib/constants.js b/examples/cms-builder-io/lib/constants.js
index 488d8cec866c..442de6348b0f 100644
--- a/examples/cms-builder-io/lib/constants.js
+++ b/examples/cms-builder-io/lib/constants.js
@@ -4,7 +4,7 @@ export const CMS_URL = 'https://builder.io/'
 export const HOME_OG_IMAGE_URL =
   'https://og-image.now.sh/Next.js%20Blog%20example%20with%20**Builder.io**.png?theme=light&md=1&fontSize=100px&images=https%3A%2F%2Fassets.vercel.com%2Fimage%2Fupload%2Ffront%2Fassets%2Fdesign%2Fnextjs-black-logo.svg&images=https%3A%2F%2Fcdn.builder.io%2Fapi%2Fv1%2Fimage%2Fassets%252FYJIGb4i01jvw0SRdL5Bt%252F79c8b61740bc41d5ae722c000ddb5915'
 export const BUILDER_CONFIG = {
-  apiKey: process.env.BUILDER_PUBLIC_KEY,
+  apiKey: process.env.NEXT_PUBLIC_BUILDER_API_KEY,
   postsModel: 'post',
   previewSecret: 'micky-mouse',
 }
diff --git a/examples/cms-builder-io/next.config.js b/examples/cms-builder-io/next.config.js
index 3503fbb00e47..b4f3c29cb84d 100644
--- a/examples/cms-builder-io/next.config.js
+++ b/examples/cms-builder-io/next.config.js
@@ -16,8 +16,4 @@ module.exports = {
       },
     ]
   },
-  env: {
-    // expose env to the browser
-    BUILDER_PUBLIC_KEY: process.env.BUILDER_PUBLIC_KEY,
-  },
 }