Documentation for file_save_upload() is wrong

Docs says that file_save_upload() accepts $form_state as a second parameter. But actual list of parameters is this:

function file_save_upload($form_field_name, $validators = array(), $destination = FALSE, $delta = NULL, $replace = FILE_EXISTS_RENAME) {
  /* ... */
}

From the look of function definition, the documentation part referencing $form_state can be removed.