Missing Controller

Error: DietClinicController could not be found.

Error: Create the class DietClinicController below in file: public_html/controllers/diet_clinic_controller.php

<?php
class DietClinicController extends AppController {

	var $name = 'DietClinic';
}
?>

Notice: If you want to customize this error message, create public_html/views/errors/missing_controller.ctp