The subuser_get_parent function returns the wrong uid

The subuser_get_parent function is returning the same uid as was passed in to the function. The issue is the the SQL query. It is currently

return db_result(db_query("SELECT uid FROM {subuser_relationship} WHERE uid = %d", $uid));

but I think it should be

return db_result(db_query("SELECT parent_id FROM {subuser_relationship} WHERE uid = %d", $uid));