diff --git a/erpnext/selling/page/point_of_sale/pos_controller.js b/erpnext/selling/page/point_of_sale/pos_controller.js
index 5e70d6d..46320e5 100644
--- a/erpnext/selling/page/point_of_sale/pos_controller.js
+++ b/erpnext/selling/page/point_of_sale/pos_controller.js
@@ -522,7 +522,7 @@
 
 			const from_selector = field === 'qty' && value === "+1";
 			if (from_selector)
-				value = flt(item_row.qty * item_row.conversion_factor) + flt(value);
+				value = flt(item_row.stock_qty) + flt(value);
 
 			if (item_row_exists) {
 				if (field === 'qty')