diff --git a/sapl/comissoes/migrations/0024_auto_20200602_0915.py b/sapl/comissoes/migrations/0024_auto_20200602_0915.py
new file mode 100644
index 000000000..b51d9bd8f
--- /dev/null
+++ b/sapl/comissoes/migrations/0024_auto_20200602_0915.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2020-06-02 12:15
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('comissoes', '0023_auto_20191211_1752'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='composicao',
+            name='comissao',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='comissoes.Comissao', verbose_name='Comissão'),
+        ),
+        migrations.AlterField(
+            model_name='participacao',
+            name='composicao',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='participacao_set', to='comissoes.Composicao', verbose_name='Composição'),
+        ),
+    ]
diff --git a/sapl/comissoes/models.py b/sapl/comissoes/models.py
index 8efac2ee6..9826c9848 100644
--- a/sapl/comissoes/models.py
+++ b/sapl/comissoes/models.py
@@ -141,7 +141,7 @@ class CargoComissao(models.Model):
 @reversion.register()
 class Composicao(models.Model):  # IGNORE
     comissao = models.ForeignKey(Comissao,
-                                 on_delete=models.PROTECT,
+                                 on_delete=models.CASCADE,
                                  verbose_name=_('Comissão'))
     periodo = models.ForeignKey(Periodo,
                                 on_delete=models.PROTECT,
@@ -160,7 +160,7 @@ class Composicao(models.Model):  # IGNORE
 class Participacao(models.Model):  # ComposicaoComissao
     composicao = models.ForeignKey(Composicao,
                                    related_name='participacao_set',
-                                   on_delete=models.PROTECT,
+                                   on_delete=models.CASCADE,
                                    verbose_name=_('Composição'))
     parlamentar = models.ForeignKey(Parlamentar,
                                     on_delete=models.PROTECT,