diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 591b52bf186..970461bd0d0 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -1634,7 +1634,7 @@ def make_inter_company_transaction(doctype, source_name, target_doc=None):
 		}
 	}
 
-	if self.doctype in ["Sales Invoice", "Sales Order"]:
+	if doctype in ["Sales Invoice", "Sales Order"]:
 		item_field_map["field_map"].update({
 			"name": target_detail_field
 		})