diff --git a/purchase.xml b/purchase.xml
index f9202f0714..d3ecb5bbf4 100644
--- a/purchase.xml
+++ b/purchase.xml
@@ -18,15 +18,6 @@ this repository contains the full copyright notices and license terms. -->
             <field name="group" ref="group_purchase_admin"/>
         </record>
 
-        <record model="res.user-res.group" id="user_trigger_group_purchase">
-            <field name="user" ref="res.user_trigger"/>
-            <field name="group" ref="group_purchase"/>
-        </record>
-        <record model="res.user-res.group" id="user_trigger_group_purchase_admin">
-            <field name="user" ref="res.user_trigger"/>
-            <field name="group" ref="group_purchase_admin"/>
-        </record>
-
         <record model="ir.ui.icon" id="purchase_icon">
             <field name="name">tryton-purchase</field>
             <field name="path">icons/tryton-purchase.svg</field>