Dificuldade para fazer Distinct no HQL

public List<Marca> pesquisa_marca(String nmMarc, int status) {
        EntityManager em = getEntityManager();
        em.getTransaction().begin();
        String jpql = "Select m "
                + "from Marca m where m.nmMarca LIKE :nmMarc and m.status = :status";
        Query query = em.createQuery(jpql);
        query.setParameter("nmMarc", "%"+nmMarc+"%");
        query.setParameter("status", status);
        listMarca = query.getResultList();
        em.getTransaction().commit();
        em.close();
       return listMarca;
    }//fim do meotod Pesquisa Marca

/*
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package tcc.entidades;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;

/**
 *
 * @author Neylon
 */
@Entity
public class Marca implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String nmMarca;
    @ManyToOne
    private Fornecedor fornec;
    private int status;
    
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getNmMarca() {
        return nmMarca;
    }

    public void setNmMarca(String nmMarca) {
        this.nmMarca = nmMarca;
    }

    public Fornecedor getFornec() {
        return fornec;
    }

    public void setFornec(Fornecedor fornec) {
        this.fornec = fornec;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    @Override
    public String toString() {
        return  nmMarca;
    }



    
}//fim da clase marca