diff --git a/addons/point_of_sale/pos.py b/addons/point_of_sale/pos.py
index 97b5085139f..597be8eaea7 100644
--- a/addons/point_of_sale/pos.py
+++ b/addons/point_of_sale/pos.py
@@ -1091,13 +1091,13 @@ class pos_order_line(osv.osv):
         uom_id=p_obj.uom_po_id.id 
         price = self.pool.get('product.pricelist').price_get(cr, uid,
             [pricelist], product_id, qty or 1.0, partner_id,{'uom': uom_id})[pricelist]
-        price=price or p_obj.list_price
-        if price is False:
+        unit_price=price or p_obj.list_price
+        if unit_price is False:
             raise osv.except_osv(_('No valid pricelist line found !'),
                 _("Couldn't find a pricelist line matching this product" \
                 " and quantity.\nYou have to change either the product," \
                 " the quantity or the pricelist."))
-        return price 
+        return unit_price 
     
     def onchange_product_id(self, cr, uid, ids, pricelist, product_id, qty=0, partner_id=False):
         price = self.price_by_product(cr, uid, ids, pricelist, product_id, qty, partner_id)