diff --git a/addons/purchase/report/purchase_report.py b/addons/purchase/report/purchase_report.py
index ef8abd42368744dca4a9f6cad07aeaf696881cac..5cf2f86dea5fe4805853324e38e45cc7e8a41661 100644
--- a/addons/purchase/report/purchase_report.py
+++ b/addons/purchase/report/purchase_report.py
@@ -123,4 +123,4 @@ class PurchaseReport(models.Model):
                     partner.commercial_partner_id,
                     analytic_account.id
             )
-        """ % self.pool['res.currency']._select_companies_rates())
+        """ % self.env['res.currency']._select_companies_rates())