diff --git a/bda/migrations/0002_add_tirage.py b/bda/migrations/0002_add_tirage.py
index 15865e5c..73d597ba 100644
--- a/bda/migrations/0002_add_tirage.py
+++ b/bda/migrations/0002_add_tirage.py
@@ -17,11 +17,6 @@ def forwards_func(apps, schema_editor):
             fermeture=timezone.now()),
     ])
 
-def reverse_func(apps, schema_editor):
-    Tirage = apps.get_model("bda", "Tirage")
-    db_alias = schema_editor.connection.alias
-    Tirage.objects.using(db_alias).delete()
-
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -40,7 +35,7 @@ class Migration(migrations.Migration):
                 ('active', models.BooleanField(default=True, verbose_name=b'Tirage actif')),
             ],
         ),
-        migrations.RunPython(forwards_func, reverse_func),
+        migrations.RunPython(forwards_func, migrations.RunPython.noop),
         migrations.AlterField(
             model_name='participant',
             name='user',