diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index ea7432caa21..e464a783ad7 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -450,11 +450,8 @@ erpnext.accounts.SalesInvoiceController = class SalesInvoiceController extends e
 	}
 };
 
-console.log('innn')
 // for backward compatibility: combine new and previous states
-let controller_instance = new erpnext.accounts.SalesInvoiceController({frm: cur_frm})
-extend_cscript(cur_frm.cscript, controller_instance);
-extend_cscript(cur_frm.cscript.__proto_, controller_instance.__proto__);
+extend_cscript(cur_frm.cscript, new erpnext.accounts.SalesInvoiceController({frm: cur_frm}));
 
 cur_frm.cscript['Make Delivery Note'] = function() {
 	frappe.model.open_mapped_doc({