diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index 17228a3c28..2b48d66dca 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -347,8 +347,8 @@ erpnext.accounts.SalesInvoiceController = erpnext.selling.SellingController.exte
 
 	items_add: function(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: function() {
 		this._super();