Link to undefined ajax.cart.css

In uc_ajax_cart.module #279:

...
function _uc_ajax_cart_load_res() {
  static $loaded ;

  if (isset($loaded) && $loaded === TRUE) return;

  /** Add standard js **/
  drupal_add_js('misc/jquery.form.js');
  drupal_add_js(drupal_get_path('module', 'uc_ajax_cart') .'/js/jquery.blockUI.js');
  drupal_add_js(drupal_get_path('module', 'uc_ajax_cart') .'/js/uc_ajax_cart.js');
  drupal_add_js(drupal_get_path('module', 'uc_ajax_cart') .'/js/jquery.cookie.js');

  drupal_add_css(drupal_get_path('module', 'uc_ajax_cart') .'/css/ajax.cart.css');
....

there is no such a file /css/ajax.cart.css, there is /css/uc_ajax_cart.css