diff --git a/django/apps/existing_database/migrations/0001_initial.py b/django/apps/existing_database/migrations/0001_initial.py
index fa75e8f74..a8bfcd2fd 100644
--- a/django/apps/existing_database/migrations/0001_initial.py
+++ b/django/apps/existing_database/migrations/0001_initial.py
@@ -25,6 +25,11 @@ class Migration(migrations.Migration):
                 ("required_count", models.IntegerField(blank=True, null=True)),
                 ("progress", models.IntegerField(blank=True, null=True)),
                 ("project_type_specifics", models.TextField(blank=True, null=True)),
+                ("total_area", models.FloatField(blank=True, null=True, default=None)),
+                (
+                    "time_spent_max_allowed",
+                    models.FloatField(blank=True, null=True, default=None),
+                ),
             ],
             options={
                 "db_table": "groups",
diff --git a/django/apps/existing_database/models.py b/django/apps/existing_database/models.py
index fe6b00954..8aa8ea8a7 100644
--- a/django/apps/existing_database/models.py
+++ b/django/apps/existing_database/models.py
@@ -105,9 +105,10 @@ class Group(Model):
     required_count = models.IntegerField(blank=True, null=True)
     progress = models.IntegerField(blank=True, null=True)
     # Database uses JSON instead of JSONB (not supported by django)
-    project_type_specifics = models.TextField(blank=True, null=True)
-    total_area = models.FloatField(blank=True, null=True)
-    time_spent_max_allowed = models.FloatField(blank=True, null=True)
+    project_type_specifics = models.TextField(blank=True, null=True, default=None)
+    # Used by aggreagated module
+    total_area = models.FloatField(blank=True, null=True, default=None)
+    time_spent_max_allowed = models.FloatField(blank=True, null=True, default=None)
 
     # Django derived fields from ForeignKey
     project_id: str