Fail on disabling cck required fields validation

When I form_altering a form with cck values, inserting some ahah field, on a change event I get a validation errors in required cck fields.

I fixed this with changing this function from:

function _ahah_helper_disable_validation(&$form) {
  foreach (element_children($form) as $child) {
    $form[$child]['#validated'] = TRUE;
    _ahah_helper_disable_validation($form[$child]);
  }
}

To:

function _ahah_helper_disable_validation(&$form) {
  foreach (element_children($form) as $child) {
    $form[$child]['#validated'] = TRUE;
	if(isset($form[$child]['#required']))
		$form[$child]['#required'] = FALSE;
    _ahah_helper_disable_validation($form[$child]);
  }
}

It seem to works now. It's okay?