diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index bf620ab..06a4974 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -92,7 +92,7 @@
 		if not self.credit_to:
 			self.credit_to = get_party_account("Supplier", self.supplier, self.company)
 		if not self.due_date:
-			self.due_date = get_due_date(self.posting_date, "Supplier", self.supplier, self.company)
+			self.due_date = get_due_date(self.posting_date, "Supplier", self.supplier)
 
 		super(PurchaseInvoice, self).set_missing_values(for_validate)
 
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index a5bf4ff..afed3e8 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -241,7 +241,7 @@
 		if not self.debit_to:
 			self.debit_to = get_party_account("Customer", self.customer, self.company)
 		if not self.due_date and self.customer:
-			self.due_date = get_due_date(self.posting_date, "Customer", self.customer, self.company)
+			self.due_date = get_due_date(self.posting_date, "Customer", self.customer)
 
 		super(SalesInvoice, self).set_missing_values(for_validate)