diff --git a/certego_saas/apps/notifications/migrations/0004_for_user_blank.py b/certego_saas/apps/notifications/migrations/0004_for_user_blank.py
new file mode 100644
index 0000000..a9b6d76
--- /dev/null
+++ b/certego_saas/apps/notifications/migrations/0004_for_user_blank.py
@@ -0,0 +1,23 @@
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("certego_saas_notifications", "0003_for_user"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="notification",
+            name="for_user",
+            field=models.ForeignKey(
+                settings.AUTH_USER_MODEL,
+                related_name="notifications",
+                help_text="If the field is empty, the notification is for everyone; otherwise only for the specified user",
+                null=True,
+                blank=True,
+                on_delete=models.CASCADE,
+            ),
+        ),
+    ]