diff --git a/purchase_request.xml b/purchase_request.xml
index b6d245b293..8f64ffcc7a 100644
--- a/purchase_request.xml
+++ b/purchase_request.xml
@@ -130,6 +130,7 @@
         <record model="res.user" id="user_generate_request">
             <field name="login">user_cron_purchase_request</field>
             <field name="name">Cron Purchase Request</field>
+            <field name="groups" eval="[('add', ref('purchase.group_purchase'))]"/>
             <field name="signature"></field>
         </record>