HAVING does not parse column aliases

Doesn't work for me in Symfony 1.3.1, Doctrine 1.2.1

using this DQL:

Doctrine_Query::create()
->select('COUNT(s.status) as cn MIN(s.status) as minstat')
->from('LogisticOrder o')
->innerJoin('o.Status os')
->innerJoin('o.PickingRequests r')
->innerJoin('r.Status s')
->where('os.status=?', OrderStatusLog::$STATUS_PICKING)
->groupBy('r.order_id')
->having('minstat=? AND cn=1', array(512))
->getSqlQuery();

I get

SELECT COUNT(s4.status) AS s4__0 FROM sd_logisticorder s INNER JOIN sd_order_status_log s2 ON s.status_id = s2.id INNER JOIN sd_picking_request s3 ON s.id = s3.order_id INNER JOIN sd_picking_request_status s4 ON s3.id = s4.request_id WHERE (s2.status = ?) GROUP BY s3.order_id HAVING (minstat=? AND cn=1 )

Just to inform you: The problem is the missing space at the having operators

Doesn't work:
->having('minstat=? AND cn=1', array(512))

Works:
->having('minstat = ? AND cn = 1', array(512))