diff --git a/sapl/comissoes/forms.py b/sapl/comissoes/forms.py
index 5aadad6b4..77523d26b 100644
--- a/sapl/comissoes/forms.py
+++ b/sapl/comissoes/forms.py
@@ -10,6 +10,7 @@ from django.db import transaction
 from django.db.models import Q
 from django.forms import ModelForm
 from django.utils.translation import ugettext_lazy as _
+from django.utils import timezone
 
 from sapl.base.models import Autor, TipoAutor
 from sapl.comissoes.models import (Comissao, Composicao,
@@ -142,7 +143,6 @@ class ParticipacaoCreateForm(forms.ModelForm):
             values_list('parlamentar',
                         flat=True
                         ).distinct()
-
         qs = Parlamentar.objects.filter(id__in=parlamentares).distinct().\
             exclude(id__in=id_part)
         eligible = self.verifica()
@@ -184,7 +184,7 @@ class ParticipacaoCreateForm(forms.ModelForm):
     def create_participacao(self):
         composicao = Composicao.objects.get(id=self.initial['parent_pk'])
         data_inicio_comissao = composicao.periodo.data_inicio
-        data_fim_comissao = composicao.periodo.data_fim
+        data_fim_comissao = composicao.periodo.data_fim if composicao.periodo.data_fim else timezone.now()
         q1 = Q(data_fim_mandato__isnull=False,
                data_fim_mandato__gte=data_inicio_comissao)
         q2 = Q(data_inicio_mandato__gte=data_inicio_comissao) \