diff --git a/golem_activity_registration_custom_price/models/golem_member.py b/golem_activity_registration_custom_price/models/golem_member.py
index 1ce0130..ebac655 100644
--- a/golem_activity_registration_custom_price/models/golem_member.py
+++ b/golem_activity_registration_custom_price/models/golem_member.py
@@ -40,7 +40,7 @@ class GolemMember(models.Model):
                 area_ids = self.env['golem.partner.area'].search([])
                 if member.area_id:
                     applicable_areas += area_ids.filtered(
-                        lambda r: r == member.area_id
+                        lambda r: r == member.area_id.root_id
                     )
                 if not applicable_areas and area_ids:
                     applicable_areas += area_ids[0]