Post list category plugin alphabetical order [closed]

Yes, there is. Paste this in your function.php

add_action('pre_get_posts','wpse_175699_alphabetical_order');

function wpse_175699_alphabetical_order($query) {

  if (is_category()) {
    $query->set('orderby', 'title');
    $query->set('order', 'ASC');
  }

}