diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.py b/erpnext/accounts/doctype/payment_entry/payment_entry.py
index ec35f03..b7ab4fe 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.py
@@ -827,7 +827,7 @@
 
 	# party account
 	if dt == "Sales Invoice":
-		party_account = get_party_account_based_on_invoice_discounting(dn) or ref_doc.debit_to
+		party_account = get_party_account_based_on_invoice_discounting(dn) or doc.debit_to
 	elif dt == "Purchase Invoice":
 		party_account = doc.credit_to
 	elif dt == "Fees":