diff --git a/README.md b/README.md
index 77e6bcb..2f35d88 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ navigator.serviceWorker.register('/service-worker.js')
 The VAPID public key you generated earlier is made available to the client as a `UInt8Array`. To do this, one way would be to expose the urlsafe-decoded bytes from Ruby to JavaScript when rendering the HTML template.
 
 ```javascript
-window.vapidPublicKey = new Uint8Array(<%= Base64.urlsafe_decode64(ENV['VAPID_PUBLIC_KEY']).bytes %>);
+window.vapidPublicKey = <%= ENV['VAPID_PUBLIC_KEY'].delete('=') %>);
 ```
 
 Your JavaScript code uses the `pushManager` interface to subscribe to push notifications, passing the VAPID public key to the subscription settings.