diff --git a/materia/migrations/0028_auto_20160419_1000.py b/materia/migrations/0028_auto_20160419_1000.py
new file mode 100644
index 000000000..579eca291
--- /dev/null
+++ b/materia/migrations/0028_auto_20160419_1000.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9 on 2016-04-19 13:00
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('materia', '0027_auto_20160404_1409'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tipomaterialegislativa',
+            name='num_automatica',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AlterField(
+            model_name='tipomaterialegislativa',
+            name='quorum_minimo_votacao',
+            field=models.PositiveIntegerField(blank=True, null=True),
+        ),
+    ]
diff --git a/materia/models.py b/materia/models.py
index bd007594d..d80d751c4 100644
--- a/materia/models.py
+++ b/materia/models.py
@@ -12,9 +12,9 @@ class TipoMateriaLegislativa(models.Model):
     sigla = models.CharField(max_length=5, verbose_name=_('Sigla'))
     descricao = models.CharField(max_length=50, verbose_name=_('Descrição '))
     # XXX o que é isso ?
-    num_automatica = models.BooleanField()
+    num_automatica = models.BooleanField(default=False)
     # XXX o que é isso ?
-    quorum_minimo_votacao = models.PositiveIntegerField()
+    quorum_minimo_votacao = models.PositiveIntegerField(blank=True, null=True)
 
     class Meta:
         verbose_name = _('Tipo de Matéria Legislativa')