diff --git a/erpnext/public/js/controllers/transaction.js b/erpnext/public/js/controllers/transaction.js
index a583f7d05b3..ce3efc939c7 100644
--- a/erpnext/public/js/controllers/transaction.js
+++ b/erpnext/public/js/controllers/transaction.js
@@ -275,7 +275,7 @@ erpnext.TransactionController = erpnext.taxes_and_totals.extend({
 							doctype: me.frm.doc.doctype,
 							name: me.frm.doc.name,
 							project: item.project || me.frm.doc.project,
-							qty: item.qty,
+							qty: item.qty || 1,
 							stock_qty: item.stock_qty,
 							conversion_factor: item.conversion_factor
 						}