diff --git a/view/purchase_form.xml b/view/purchase_form.xml
index 4fa2dc8539..fbbcc7530f 100644
--- a/view/purchase_form.xml
+++ b/view/purchase_form.xml
@@ -2,7 +2,7 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="/form/field[@name='supplier_reference']" position="after">
+    <xpath expr="/form/field[@name='reference']" position="after">
         <label name="customer"/>
         <field name="customer"/>
         <label name="delivery_address"/>