diff --git a/gestioncof/migrations/0002_enable_unprocessed_demandes.py b/gestioncof/migrations/0002_enable_unprocessed_demandes.py
new file mode 100644
index 00000000..18006588
--- /dev/null
+++ b/gestioncof/migrations/0002_enable_unprocessed_demandes.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gestioncof', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='petitcoursdemande',
+            name='processed',
+            field=models.DateTimeField(null=True, verbose_name='Date de traitement', blank=True),
+        ),
+    ]
diff --git a/gestioncof/petits_cours_models.py b/gestioncof/petits_cours_models.py
index 25f7ec15..793c6840 100644
--- a/gestioncof/petits_cours_models.py
+++ b/gestioncof/petits_cours_models.py
@@ -76,7 +76,8 @@ class PetitCoursDemande(models.Model):
 
     traitee = models.BooleanField(_(u"Traitée"), default=False)
     traitee_par = models.ForeignKey(User, blank=True, null=True)
-    processed = models.DateTimeField(_(u"Date de traitement"), blank=True)
+    processed = models.DateTimeField(_(u"Date de traitement"),
+                                     blank=True, null=True)
     created = models.DateTimeField(_(u"Date de création"), auto_now_add=True)
 
     class Meta: