diff --git a/README.md b/README.md
index c018f04..c82c943 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ This package contains a mail transport called `preview`. We recommend to only us
 
 ### Registering the preview middleware route
 
-The package can display a link to sent mails whenever they are sent. To use this feature, you must add the `Spatie\MailPreview\Http\Middleware\AddMailPreviewPopupToResponse` middleware to the `web` middleware group in your kernel.
+The package can display a link to sent mails whenever they are sent. To use this feature, you must add the `Spatie\MailPreview\Http\Middleware\AddMailPreviewOverlayToResponse` middleware to the `web` middleware group in your kernel.
 
 ```php
 // in app/Http/Kernel.php