Contribution Import fails due to failure opening required file contribute.php

Tried to import contributions and received the following error:

Fatal error: require_once() [function.require]: Failed opening required 'api/v3/Contribute.php' (include_path='.:/home/cdmpdev/public_html/sites/all/modules/civicrm:/home/cdmpdev/public_html/sites/all/modules/civicrm/packages:.:/usr/lib/php:/usr/local/lib/php') in /home/cdmpdev/public_html/sites/all/modules/civicrm/api/api.php on line 248

Workaround is to copy contribute.php file from v2 to v3 and change this line in contribute.php:

require_once 'api/v2/Contribution.php';

to

require_once 'api/v3/Contribution.php';