diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.js b/erpnext/stock/doctype/stock_entry/stock_entry.js
index 49f0b99..82e3dfc 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.js
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.js
@@ -798,7 +798,7 @@
 		});
 
 		serial_no_list_field.$input.on('input', function() {
-			serial_list = $(this).get_value().replace(/\s+/g, ' ').split(' ');
+			serial_list = serial_no_list_field.get_value().replace(/\s+/g, ' ').split(' ');
 			update_quantity(0);
 		});
 	}