diff --git a/bda/migrations/0010_spectaclerevente_shotgun.py b/bda/migrations/0010_spectaclerevente_shotgun.py
index a4bf2abc..35b4da8a 100644
--- a/bda/migrations/0010_spectaclerevente_shotgun.py
+++ b/bda/migrations/0010_spectaclerevente_shotgun.py
@@ -2,6 +2,19 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
+from django.utils import timezone
+from datetime import timedelta
+
+
+def forwards_func(apps, schema_editor):
+    SpectacleRevente = apps.get_model("bda", "SpectacleRevente")
+
+    for revente in SpectacleRevente.objects.all():
+        is_expired = timezone.now() > revente.date_tirage()
+        is_direct = (revente.attribution.spectacle.date >= revente.date and
+                     timezone.now() > revente.date + timedelta(minutes=15))
+        revente.shotgun = is_expired or is_direct
+        revente.save()
 
 
 class Migration(migrations.Migration):
@@ -16,4 +29,5 @@ class Migration(migrations.Migration):
             name='shotgun',
             field=models.BooleanField(default=False, verbose_name='Disponible imm\xe9diatement'),
         ),
+        migrations.RunPython(forwards_func, migrations.RunPython.noop),
     ]