diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index ad0d63a818f..39b5c8658f7 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -1373,7 +1373,7 @@ class stock_picking(osv.osv):
             'product_uom_qty': qty,
             'name': _('Extra Move: ') + name,
             'state': 'draft',
-            'restrict_partner_id': op.owner_id,
+            'restrict_partner_id': op.owner_id.id,
             'group_id': picking.group_id.id,
             }
         return res