JPQL limit query

How can I limit in a select query of JPQL named query? I need the limit to be done in the query level itself and not in the java layer!!! I am trying to use

@NamedQueries(value = {
        @NamedQuery(name = UserNotification.QueryName.NOTIFICATION_DISPLAYED,
                    query = "SELECT un FROM UserNotification un " +
                            "WHERE un.orgId IN (:orgList) " +
                            "AND un.user.id = :userId LIMIT 5")

but in vain!!!

Please suggest