diff --git a/erpnext/stock/doctype/purchase_receipt/mapper.py b/erpnext/stock/doctype/purchase_receipt/mapper.py
index 273afcec7a9..528b6865ed5 100644
--- a/erpnext/stock/doctype/purchase_receipt/mapper.py
+++ b/erpnext/stock/doctype/purchase_receipt/mapper.py
@@ -60,8 +60,7 @@ def make_purchase_invoice(
 ):
 	if args is None:
 		args = {}
-	if isinstance(args, str):
-		args = json.loads(args)
+	args = frappe.parse_json(args)
 
 	from erpnext.accounts.party import get_payment_terms_template