diff --git a/addons/purchase/purchase_security.xml b/addons/purchase/purchase_security.xml
index 2436b3159a2..4c4eb0263b7 100644
--- a/addons/purchase/purchase_security.xml
+++ b/addons/purchase/purchase_security.xml
@@ -7,7 +7,7 @@
 		</record>
 
 		<record model="res.users" id="base.user_admin">
-			<field name="groups_id" eval="[(6, 0, [ref('base.group_admin'),ref('group_purchase_manager')])]"/>
+			<field name="groups_id" eval="[(4 ,ref('group_purchase_manager'))]"/>
 		</record>
 
 		<record id="ir_model_access_stockmove0" model="ir.model.access">