diff --git a/addons/purchase/report/purchase_bill.py b/addons/purchase/report/purchase_bill.py
index a16ff44b60c..036309e8e29 100644
--- a/addons/purchase/report/purchase_bill.py
+++ b/addons/purchase/report/purchase_bill.py
@@ -30,7 +30,7 @@ class PurchaseBillUnion(models.Model):
                     id as vendor_bill_id, NULL as purchase_order_id
                 FROM account_invoice
                 WHERE
-                    type='in_invoice' and state in ('open','in_payment','paid','cancel')
+                    type='in_invoice' and COALESCE(number, '') != ''
             UNION
                 SELECT
                     -id, name, partner_ref, partner_id, date_order::date as date, amount_untaxed as amount, currency_id, company_id,