diff --git a/erpnext/public/js/controllers/transaction.js b/erpnext/public/js/controllers/transaction.js
index f831a88..4ea834b 100644
--- a/erpnext/public/js/controllers/transaction.js
+++ b/erpnext/public/js/controllers/transaction.js
@@ -798,14 +798,14 @@
 					}
 					let selling_doctypes_for_tc = ["Sales Invoice", "Quotation", "Sales Order", "Delivery Note"];
 					if (company_doc.default_selling_terms && frappe.meta.has_field(me.frm.doc.doctype, "tc_name") &&
-					selling_doctypes_for_tc.indexOf(me.frm.doc.doctype) != -1) {
+					selling_doctypes_for_tc.includes(me.frm.doc.doctype) && !me.frm.doc.tc_name) {
 						me.frm.set_value("tc_name", company_doc.default_selling_terms);
 					}
 					let buying_doctypes_for_tc = ["Request for Quotation", "Supplier Quotation", "Purchase Order",
 						"Material Request", "Purchase Receipt"];
 					// Purchase Invoice is excluded as per issue #3345
 					if (company_doc.default_buying_terms && frappe.meta.has_field(me.frm.doc.doctype, "tc_name") &&
-					buying_doctypes_for_tc.indexOf(me.frm.doc.doctype) != -1) {
+					buying_doctypes_for_tc.includes(me.frm.doc.doctype) && !me.frm.doc.tc_name) {
 						me.frm.set_value("tc_name", company_doc.default_buying_terms);
 					}
 				}