diff --git a/src/pretix/base/migrations/0282_ordersyncresult_ordersyncqueue.py b/src/pretix/base/migrations/0282_ordersyncresult_ordersyncqueue.py
index 32722ba134..f387325460 100644
--- a/src/pretix/base/migrations/0282_ordersyncresult_ordersyncqueue.py
+++ b/src/pretix/base/migrations/0282_ordersyncresult_ordersyncqueue.py
@@ -38,7 +38,7 @@ class Migration(migrations.Migration):
                 ('triggered', models.DateTimeField(auto_now_add=True)),
                 ('failed_attempts', models.PositiveIntegerField(default=0)),
                 ('not_before', models.DateTimeField(db_index=True)),
-                ('need_manual_retry', models.CharField(null=True)),
+                ('need_manual_retry', models.CharField(null=True, max_length=20)),
                 ('in_flight', models.BooleanField(default=False)),
                 ('in_flight_since', models.DateTimeField(blank=True, null=True)),
                 ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='queued_sync_jobs', to='pretixbase.event')),
diff --git a/src/pretix/base/models/datasync.py b/src/pretix/base/models/datasync.py
index 6c4b9f3753..8c8dd537fd 100644
--- a/src/pretix/base/models/datasync.py
+++ b/src/pretix/base/models/datasync.py
@@ -49,7 +49,7 @@ class OrderSyncQueue(models.Model):
     triggered = models.DateTimeField(blank=False, null=False, auto_now_add=True)
     failed_attempts = models.PositiveIntegerField(default=0)
     not_before = models.DateTimeField(blank=False, null=False, db_index=True)
-    need_manual_retry = models.CharField(blank=True, null=True, choices=[
+    need_manual_retry = models.CharField(blank=True, null=True, max_length=20, choices=[
         ('exceeded', _('Temporary error, auto-retry limit exceeded')),
         ('permanent', _('Misconfiguration, please check provider settings')),
         ('config', _('Misconfiguration, please check provider settings')),