diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index b8a3190..366e828 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -229,7 +229,7 @@
 			if not frappe.db.exists("Item", newdn):
 				frappe.throw(_("Item {0} does not exist").format(newdn))
 
-			field_list = ["stock_uom", "is_stock_item", "has_serial_no", "has_batch_no"]
+			field_list = ["stock_uom", "is_stock_item", "has_serial_no", "has_batch_no", "is_manufactured_item"]
 			new_properties = [cstr(d) for d in frappe.db.get_value("Item", newdn, field_list)]
 			if new_properties != [cstr(self.get(fld)) for fld in field_list]:
 				frappe.throw(_("To merge, following properties must be same for both items")