diff --git a/addons/delivery/delivery_view.xml b/addons/delivery/delivery_view.xml
index 0dbba7323e2..91513709e03 100644
--- a/addons/delivery/delivery_view.xml
+++ b/addons/delivery/delivery_view.xml
@@ -286,7 +286,7 @@
             <field name="model">sale.order</field>
             <field name="inherit_id" ref="sale.view_order_form"/>
             <field name="arch" type="xml">
-                    <xpath expr="/form/notebook/page[@string='Sale Order']/group[1]/button[@name='button_dummy']" position="after">
+                    <xpath expr="/form/notebook/page[@string='Sales Order']/group[1]/button[@name='button_dummy']" position="after">
                          <button name="%(action_delivery_cost)d" states="draft" string="Delivery Costs" type="action" icon="gtk-add" context="{'order_id':id}"/>                    
                     </xpath>
             </field>