diff --git a/backend/server/adventures/migrations/0030_set_end_date_equal_start.py b/backend/server/adventures/migrations/0030_set_end_date_equal_start.py
index 531f83c..55d5f93 100644
--- a/backend/server/adventures/migrations/0030_set_end_date_equal_start.py
+++ b/backend/server/adventures/migrations/0030_set_end_date_equal_start.py
@@ -1,12 +1,11 @@
-# Generated by Django 5.2.1 on 2025-05-27 16:38
-
 from django.db import migrations
 
 def set_end_date_equal_to_start(apps, schema_editor):
     Visit = apps.get_model('adventures', 'Visit')
     for visit in Visit.objects.filter(end_date__isnull=True):
-        visit.end_date = visit.start_date
-        visit.save()
+        if visit.start_date:
+            visit.end_date = visit.start_date
+            visit.save()
 
 class Migration(migrations.Migration):