diff --git a/sapl/legacy/models.py b/sapl/legacy/models.py
index 4c459c9dd..7d341624d 100644
--- a/sapl/legacy/models.py
+++ b/sapl/legacy/models.py
@@ -433,7 +433,7 @@ class MateriaLegislativa(models.Model):
     cod_regime_tramitacao = models.IntegerField()
     dat_publicacao = models.DateField(blank=True, null=True)
     tip_origem_externa = models.IntegerField(blank=True, null=True)
-    num_origem_externa = models.CharField(max_length=5, blank=True, null=True)
+    num_origem_externa = models.CharField(max_length=10, blank=True, null=True)
     ano_origem_externa = models.SmallIntegerField(blank=True, null=True)
     dat_origem_externa = models.DateField(blank=True, null=True)
     cod_local_origem_externa = models.IntegerField(blank=True, null=True)
diff --git a/sapl/materia/migrations/0028_auto_20180418_1629.py b/sapl/materia/migrations/0028_auto_20180418_1629.py
new file mode 100644
index 000000000..c082ce1e6
--- /dev/null
+++ b/sapl/materia/migrations/0028_auto_20180418_1629.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.13 on 2018-04-18 19:29
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('materia', '0027_auto_20180409_1443'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='materialegislativa',
+            name='numero_origem_externa',
+            field=models.CharField(blank=True, max_length=10, verbose_name='Número'),
+        ),
+    ]
diff --git a/sapl/materia/models.py b/sapl/materia/models.py
index ce4690c39..a1571072a 100644
--- a/sapl/materia/models.py
+++ b/sapl/materia/models.py
@@ -167,7 +167,7 @@ class MateriaLegislativa(models.Model):
         on_delete=models.PROTECT,
         verbose_name=_('Tipo'))
     numero_origem_externa = models.CharField(
-        max_length=5, blank=True, verbose_name=_('Número'))
+        max_length=10, blank=True, verbose_name=_('Número'))
     ano_origem_externa = models.PositiveSmallIntegerField(
         blank=True, null=True, verbose_name=_('Ano'), choices=RANGE_ANOS)
     data_origem_externa = models.DateField(