diff --git a/addons/portal_sale/portal_sale.py b/addons/portal_sale/portal_sale.py
index 49624671f98..d5b38b9c57e 100644
--- a/addons/portal_sale/portal_sale.py
+++ b/addons/portal_sale/portal_sale.py
@@ -20,6 +20,7 @@
 ##############################################################################
 
 from openerp.osv import osv, fields
+from openerp import SUPERUSER_ID
 
 
 class sale_order(osv.Model):
@@ -35,7 +36,7 @@ class sale_order(osv.Model):
     def _portal_payment_block(self, cr, uid, ids, fieldname, arg, context=None):
         result = dict.fromkeys(ids, False)
         payment_acquirer = self.pool.get('portal.payment.acquirer')
-        for this in self.browse(cr, uid, ids, context=context):
+        for this in self.browse(cr, SUPERUSER_ID, ids, context=context):
             if this.state not in ('draft', 'cancel') and not this.invoiced:
                 result[this.id] = payment_acquirer.render_payment_block(cr, uid, this, this.name,
                     this.pricelist_id.currency_id, this.amount_total, context=context)