diff --git a/addons/purchase/report/purchase_report.py b/addons/purchase/report/purchase_report.py
index 05beea47441..c3becb03721 100644
--- a/addons/purchase/report/purchase_report.py
+++ b/addons/purchase/report/purchase_report.py
@@ -66,6 +66,15 @@ class purchase_report(osv.osv):
         tools.sql.drop_view_if_exists(cr, 'purchase_report')
         cr.execute("""
             create or replace view purchase_report as (
+                WITH currency_rate (currency_id, rate, date_start, date_end) AS (
+                    SELECT r.currency_id, r.rate, r.name AS date_start,
+                        (SELECT name FROM res_currency_rate r2
+                        WHERE r2.name > r.name AND
+                            r2.currency_id = r.currency_id
+                         ORDER BY r2.name ASC
+                         LIMIT 1) AS date_end
+                    FROM res_currency_rate r
+                )
                 select
                     min(l.id) as id,
                     s.date_order as date,
@@ -87,10 +96,10 @@ class purchase_report(osv.osv):
                     extract(epoch from age(s.date_approve,s.date_order))/(24*60*60)::decimal(16,2) as delay,
                     extract(epoch from age(l.date_planned,s.date_order))/(24*60*60)::decimal(16,2) as delay_pass,
                     count(*) as nbr,
-                    sum(l.price_unit*l.product_qty)::decimal(16,2) as price_total,
-                    avg(100.0 * (l.price_unit*l.product_qty) / NULLIF(ip.value_float*l.product_qty/u.factor*u2.factor, 0.0))::decimal(16,2) as negociation,
+                    sum(l.price_unit*cr.rate*l.product_qty)::decimal(16,2) as price_total,
+                    avg(100.0 * (l.price_unit*cr.rate*l.product_qty) / NULLIF(ip.value_float*l.product_qty/u.factor*u2.factor, 0.0))::decimal(16,2) as negociation,
                     sum(ip.value_float*l.product_qty/u.factor*u2.factor)::decimal(16,2) as price_standard,
-                    (sum(l.product_qty*l.price_unit)/NULLIF(sum(l.product_qty/u.factor*u2.factor),0.0))::decimal(16,2) as price_average
+                    (sum(l.product_qty*cr.rate*l.price_unit)/NULLIF(sum(l.product_qty/u.factor*u2.factor),0.0))::decimal(16,2) as price_average
                 from purchase_order_line l
                     join purchase_order s on (l.order_id=s.id)
                         left join product_product p on (l.product_id=p.id)
@@ -99,6 +108,9 @@ class purchase_report(osv.osv):
                     left join product_uom u on (u.id=l.product_uom)
                     left join product_uom u2 on (u2.id=t.uom_id)
                     left join stock_picking_type spt on (spt.id=s.picking_type_id)
+                    join currency_rate cr on (cr.currency_id = s.currency_id and
+                        cr.date_start <= coalesce(s.date_order, now()) and
+                        (cr.date_end is null or cr.date_end > coalesce(s.date_order, now())))
                 group by
                     s.company_id,
                     s.create_uid,