diff --git a/src/program/migrations/0088_speaker_event_conflicts_and_more.py b/src/program/migrations/0088_speaker_event_conflicts_and_more.py
index 29ab2cbd..60ad2197 100644
--- a/src/program/migrations/0088_speaker_event_conflicts_and_more.py
+++ b/src/program/migrations/0088_speaker_event_conflicts_and_more.py
@@ -72,6 +72,7 @@ class Migration(migrations.Migration):
             name="duration",
             field=models.IntegerField(
                 blank=True,
+                null=True,
                 help_text="How much time (in minutes) should we set aside for this act? Please keep it between 60 and 180 minutes (1-3 hours).",
             ),
         ),