PHP Arrays and Control Structures - SWITCH

I keep getting this error:

Bummer: I do not see the correct output for admin. Did you leave off a "break"?

Here is the question:

In the code provided, there are two if statements. The second if statement displays a message IF the user role is not equal to "admin". We want to display separate messages based on the role of the logged in user. First we're going to add a message for our admin and keep the current message as the default.

Step 1: Change the second if statement to a switch statement

Step 2: Keep the current message as the default.

Step 3: Add a second check to the switch statement for the role of "admin" and display the following message:

As an admin, you can add, edit, or delete any post.

My code:

<?php
//Available roles: admin, editor, author, subscriber
if (!isset($role)) {
    $role = 'subscriber';
}

//change to switch statement
switch ($role) {
    case 'admin':
    echo "As an admin, you can add, edit, or delete any posts.";
         break;
    case 'editor':
    echo "As an editor, you can add or edit any post, and delete your own posts.";
         break; 
    case 'author':
    echo "As an author, you can add, edit, or delete your own post.";
         break;     
  default:      
    echo "You do not have access to this page. Please contact your administrator.";

      }
?>

Please explain my error if/when you find it.

Thank you.