Does what it says…but has a flaw that took me hours to fix

I was writing my own plugin and couldn’t figure out why admin-ajax kept redirecting me to my home page, then realized it was this plugin that was the culprit. To the author: PLEASE update your code so it doesn’t interfere with ajax calls. I fixed the issue by adjusting the following code thusly

    function mm_block_dashboard_access() {

            if (!defined( 'DOING_AJAX') && is_admin() && ! current_user_can( 'edit_posts' ) ) {
                    wp_redirect( home_url() );
                    exit;
            }
    }