diff --git a/sigi/apps/casas/admin.py b/sigi/apps/casas/admin.py
index 263b881..d5562de 100644
--- a/sigi/apps/casas/admin.py
+++ b/sigi/apps/casas/admin.py
@@ -334,8 +334,11 @@ class ExcluirConvenioFilter(admin.SimpleListFilter):
         return tuple([(p.pk, p.sigla) for p in Projeto.objects.all()])
 
     def queryset(self, request, queryset):
-        queryset = queryset.exclude(convenio__projeto_id=self.value())
-        return queryset.distinct('municipio__uf__nome', 'nome')
+        if (self.value() is None):
+            return queryset
+        else:    
+            queryset = queryset.exclude(convenio__projeto_id=self.value()).distinct('municipio__uf__nome', 'nome')
+        return queryset
 
 class ServicoFilter(admin.SimpleListFilter):
     title = _(u"Serviço")
diff --git a/sigi/apps/convenios/models.py b/sigi/apps/convenios/models.py
index 3e9aafb..5ab575e 100644
--- a/sigi/apps/convenios/models.py
+++ b/sigi/apps/convenios/models.py
@@ -10,6 +10,7 @@ from django.utils.translation import ugettext as _
 from sigi.apps.utils import SearchField, to_ascii
 from sigi.apps.casas.models import Orgao
 from sigi.apps.servidores.models import Servidor, Servico
+#from sigi.apps.convenios.admin import ConvenioAdmin
 
 class Projeto(models.Model):
     """ Modelo para representar os projetos do programa
@@ -65,7 +66,6 @@ class Convenio(models.Model):
         blank=True,
         help_text=_(u'Formatos:<br/>Antigo: <em>XXXXXX/XX-X</em>.<br/><em>SIGAD: XXXXX.XXXXXX/XXXX-XX</em>')
     )
-    fieldsets = ({'fields':('num_processo_sf',)})
     num_convenio = models.CharField(
         _(u'número do convênio'),
         max_length=10,