Page is using single.php not page_template.php

I have a bunch of pages that are set to use a custom page template. However, they are using the single.php instead of my page_template.php file.

This is a copy of the body_class();

class="page page-id-534 page-child parent-pageid-499 page-template page-template-single-php logged-in">

I have this code at the top of my page_template.php file:

<?php /* Template name: Profile */ ?>

And just the standard

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

on my single.php file.

There aren’t any custom queries running on the page_template.php file.