diff --git a/yuthon_property_approval/models/property_lease_contract.py b/yuthon_property_approval/models/property_lease_contract.py
index ede72dea3..48fc8497d 100644
--- a/yuthon_property_approval/models/property_lease_contract.py
+++ b/yuthon_property_approval/models/property_lease_contract.py
@@ -370,7 +370,7 @@ class PropertyLeaseContract(models.Model):
                 record.first_year_rent = all_period_rent
 
 
-    def do_generate_details_core(self, write_db=False, start_date, end_date):
+    def do_generate_details_core(self, write_db=False, start_date=None, end_date=None):
         all_period_rent = 0
 
         monthly_amount = self.total_area * self.unit_price