diff --git a/dav_registration/migrations/0012_alter_registrationstatus_accepted.py b/dav_registration/migrations/0012_alter_registrationstatus_accepted.py
new file mode 100644
index 0000000..789970d
--- /dev/null
+++ b/dav_registration/migrations/0012_alter_registrationstatus_accepted.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.13 on 2023-02-15 16:56
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dav_registration', '0011_auto_20220607_1345'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='registrationstatus',
+            name='accepted',
+            field=models.BooleanField(blank=True, null=True, verbose_name='Zusage erteilt'),
+        ),
+    ]
diff --git a/dav_registration/models.py b/dav_registration/models.py
index 86d64be..dd6d111 100644
--- a/dav_registration/models.py
+++ b/dav_registration/models.py
@@ -221,8 +221,7 @@ class RegistrationStatus(models.Model):
     registration = models.OneToOneField(Registration, on_delete=models.CASCADE, related_name='status')
     updated_at = models.DateTimeField(auto_now=True)
     answered = models.BooleanField(_('Durch Tourleitung beantwortet'), default=False)
-    # TODO: NullBooleanField is marked deprecated
-    accepted = models.NullBooleanField(_('Zusage erteilt'))
+    accepted = models.BooleanField(_('Zusage erteilt'), null=True, blank=True)
 
     class Meta:
         verbose_name = _('Anmeldungsstatus')