diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 62f979cb9c9..2188f6dee5f 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -757,6 +757,10 @@ class sale_order(osv.osv):
                                will be added. A new picking will be created if ommitted.
         :return: True
         """
+        move_obj = self.pool.get('stock.move')
+        picking_obj = self.pool.get('stock.picking')
+        procurement_obj = self.pool.get('procurement.order')
+
         proc_ids = []
         for line in order_lines:
             if line.state == 'done':
@@ -768,13 +772,13 @@ class sale_order(osv.osv):
             if line.product_id:
                 if line.product_id.product_tmpl_id.type in ('product', 'consu'):
                     if not picking_id:
-                        picking_id = self.pool.get('stock.picking').create(cr, uid, self._prepare_order_picking(cr, uid, order, *args))
-                    move_id = self.pool.get('stock.move').create(cr, uid, self._prepare_order_line_move(cr, uid, order, line, picking_id, date_planned, *args))
+                        picking_id = picking_obj.create(cr, uid, self._prepare_order_picking(cr, uid, order, *args))
+                    move_id = move_obj.create(cr, uid, self._prepare_order_line_move(cr, uid, order, line, picking_id, date_planned, *args))
                 else:
                     # a service has no stock move
                     move_id = False
 
-                proc_id = self.pool.get('procurement.order').create(cr, uid, self._prepare_order_line_procurement(cr, uid, order, line, move_id, date_planned, *args))
+                proc_id = procurement_obj.create(cr, uid, self._prepare_order_line_procurement(cr, uid, order, line, move_id, date_planned, *args))
                 proc_ids.append(proc_id)
                 line.write({'procurement_id': proc_id})
 
@@ -784,12 +788,12 @@ class sale_order(osv.osv):
                     for pick in order.picking_ids:
                         for move in pick.move_lines:
                             if move.state == 'cancel':
-                                mov_ids = self.pool.get('stock.move').search(cr, uid, [('state', '=', 'cancel'),('sale_line_id', '=', line.id),('picking_id', '=', pick.id)])
+                                mov_ids = move_obj.search(cr, uid, [('state', '=', 'cancel'),('sale_line_id', '=', line.id),('picking_id', '=', pick.id)])
                                 if mov_ids:
                                     for mov in move_obj.browse(cr, uid, mov_ids):
                                         # FIXME: the following seems broken: what if move_id doesn't exist? What if there are several mov_ids? Shouldn't that be a sum?
-                                        self.pool.get('stock.move').write(cr, uid, [move_id], {'product_qty': mov.product_qty, 'product_uos_qty': mov.product_uos_qty})
-                                        self.pool.get('procurement.order').write(cr, uid, [proc_id], {'product_qty': mov.product_qty, 'product_uos_qty': mov.product_uos_qty})
+                                        move_obj.write(cr, uid, [move_id], {'product_qty': mov.product_qty, 'product_uos_qty': mov.product_uos_qty})
+                                        procurement_obj.write(cr, uid, [proc_id], {'product_qty': mov.product_qty, 'product_uos_qty': mov.product_uos_qty})
 
         wf_service = netsvc.LocalService("workflow")
         if picking_id: