diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index f84b646..288e2a7 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -347,7 +347,7 @@
 
 	items_add(doc, cdt, cdn) {
 		var row = frappe.get_doc(cdt, cdn);
-		this.frm.script_manager.copy_from_first_row("items", row, ["income_account", "cost_center"]);
+		this.frm.script_manager.copy_from_first_row("items", row, ["income_account", "discount_account", "cost_center"]);
 	}
 
 	set_dynamic_labels() {