Erreur SQL

Erreur de requête
MySQL a répondu : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ASC' at line 5
Requête : SELECT COUNT(t.id) AS nb_torrents, a.nom, a.id, a.informations, a.genre FROM jap_torrents t RIGHT JOIN jap_articles a ON (a.id = t.id_serie) WHERE t.id_serie IS NULL OR t.id_serie IS NOT NULL GROUP BY a.nom ASC