Checkboxfor MVC is not displayed

My question is how can I solve a case with the handling of checkboxfor for my data model I have the following model:

public int Id { get; set; }
[Required(ErrorMessage = "La fecha  no puede estar vacía ")]
public DateTime FechaProcesoRegistro { get; set; }
public bool registraProceso { get; set; }

and in the view this:

<p>
    @Html.LabelFor(model => model.registraProceso)
    @Html.CheckBoxFor(m => m.registraProceso)
</p>

But in the browser I do not see the checkbox box, what can this be?