diff --git a/view/dunning_list.xml b/view/dunning_list.xml
index c86df7524c..fbe04dae78 100644
--- a/view/dunning_list.xml
+++ b/view/dunning_list.xml
@@ -2,10 +2,10 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <tree>
-    <field name="line" expand="1"/>
+    <field name="line" expand="1" optional="1"/>
     <field name="party" expand="2"/>
     <field name="amount"/>
-    <field name="amount_second_currency"/>
+    <field name="amount_second_currency" optional="1"/>
     <field name="maturity_date"/>
     <field name="level" expand="1"/>
     <field name="age"/>