diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index b7d968e..3173b6c 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -434,7 +434,7 @@
 			elif flt(d.completed_qty) <= max_allowed_qty_for_wo:
 				d.status = "Completed"
 			else:
-				frappe.throw(_("Completed Qty can not be greater than 'Qty to Manufacture'"))
+				frappe.throw(_("Completed Qty cannot be greater than 'Qty to Manufacture'"))
 
 	def set_actual_dates(self):
 		if self.get("operations"):