diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index fc5f07f525d..96a96eba500 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -4320,9 +4320,6 @@ class stock_pack_operation(osv.osv):
         'result_package_id': fields.many2one('stock.quant.package', 'Destination Package', help="If set, the operations are packed into this package", required=False, ondelete='cascade'),
         'date': fields.datetime('Date', required=True),
         'owner_id': fields.many2one('res.partner', 'Owner', help="Owner of the quants"),
-        #'update_cost': fields.boolean('Need cost update'),
-        'cost': fields.float("Cost", help="Unit Cost for this product line"),
-        'currency': fields.many2one('res.currency', string="Currency", help="Currency in which Unit cost is expressed", ondelete='CASCADE'),
         'linked_move_operation_ids': fields.one2many('stock.move.operation.link', 'operation_id', string='Linked Moves', readonly=True, help='Moves impacted by this operation for the computation of the remaining quantities'),
         'remaining_qty': fields.function(_get_remaining_qty, type='float', digits = 0, string="Remaining Qty", help="Remaining quantity in default UoM according to moves matched with this operation. "),
         'location_id': fields.many2one('stock.location', 'Source Location', required=True),