diff --git a/src/backend/apps/event/migrations/0012_alter_event_event_sub_type.py b/src/backend/apps/event/migrations/0012_alter_event_event_sub_type.py
new file mode 100644
index 000000000..13a08c86e
--- /dev/null
+++ b/src/backend/apps/event/migrations/0012_alter_event_event_sub_type.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.2.3 on 2024-01-08 23:40
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('event', '0011_event_closed'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='event',
+            name='event_sub_type',
+            field=models.CharField(blank=True, default='', max_length=32),
+        ),
+    ]
diff --git a/src/backend/apps/event/models.py b/src/backend/apps/event/models.py
index 7d6a8ed9f..bae7f13fd 100644
--- a/src/backend/apps/event/models.py
+++ b/src/backend/apps/event/models.py
@@ -8,7 +8,7 @@ class Event(BaseModel):
     # Description
     description = models.CharField(max_length=1024)
     event_type = models.CharField(max_length=32)
-    event_sub_type = models.CharField(max_length=32, blank=True)
+    event_sub_type = models.CharField(max_length=32, blank=True, default='')
 
     # General status
     status = models.CharField(max_length=32)
diff --git a/src/backend/apps/event/tasks.py b/src/backend/apps/event/tasks.py
index ccc14d03e..163e128cb 100644
--- a/src/backend/apps/event/tasks.py
+++ b/src/backend/apps/event/tasks.py
@@ -31,7 +31,13 @@ def build_data_diff(current_obj, new_obj_data):
         current_field_data = getattr(current_obj, field)
         new_field_data = new_obj_data[field] if field in new_obj_data else None
         if not compare_data(current_field_data, new_field_data):
-            data_diff[field] = new_field_data
+            if field == 'location':
+                # {'coordinates': [-122.601346, 49.143921], 'type': 'Point'}
+                locationCls = Point if new_field_data['type'] == 'Point' else LineString
+                data_diff[field] = locationCls(new_field_data['coordinates'])
+
+            else:
+                data_diff[field] = new_field_data
 
     return data_diff