Error with Column Name in Django

I have a problem with a database in SqlServer 2008, I'm doing some reports to show them in a Django project from a production database, which is used by another system, I have the following view:

class DetalleDeuda(ListView):
    model = T090Deudas
    template_name = 'deudas.html'
    context_object_name = 'deudas'    

    @method_decorator(permission_required('deudas.ver_deuda_prescrita',reverse_lazy('usuarios:permiso_denegado')))
    def dispatch(self, *args, **kwargs):
        self.contribuyente = self.kwargs['contribuyente']
        return super(DetalleDeuda, self).dispatch(*args, **kwargs)

    def get_context_data(self, **kwargs):        
        context = super(DetalleDeuda, self).get_context_data(**kwargs)
        contrib = T001Contribuyente.objects.get(c001cod_cont=self.contribuyente)
        context['contribuyente'] = contrib        
        return context

    def get_queryset(self):
        queryset = T090Deudas.objects.filter(c090cod_cont=self.contribuyente)
        return queryset 

But unfortunately the previous programmers named a column of the table T090Deudas, like c090year, so when I show the result in my template I get the following error:

  

Exception Type: UnicodeDecodeError

     

Exception Value: 'ascii' codec can not decode byte 0xc3 in position 19: ordinal not in range (128)

I can not change the name of the column, since this would mean altering the other system that is made in Visual Basic and it is quite large, I would like to know if it is possible to do something or simply I should do the query omitting that column.