diff --git a/view/inventory_line_tree.xml b/view/inventory_line_tree.xml
index 0d6460f385..4f1ec7d31a 100644
--- a/view/inventory_line_tree.xml
+++ b/view/inventory_line_tree.xml
@@ -3,6 +3,6 @@
 this repository contains the full copyright notices and license terms. -->
 <data>
     <xpath expr="/tree/field[@name='product']" position="after">
-        <field name="lot"/>
+        <field name="lot" expand="1"/>
     </xpath>
 </data>
diff --git a/view/lot_tree.xml b/view/lot_tree.xml
index a3f1fa4656..4f893a670f 100644
--- a/view/lot_tree.xml
+++ b/view/lot_tree.xml
@@ -2,6 +2,6 @@
 <!-- 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="number"/>
-    <field name="product"/>
+    <field name="number" expand="1"/>
+    <field name="product" expand="1"/>
 </tree>
diff --git a/view/move_tree.xml b/view/move_tree.xml
index 0d6460f385..4f1ec7d31a 100644
--- a/view/move_tree.xml
+++ b/view/move_tree.xml
@@ -3,6 +3,6 @@
 this repository contains the full copyright notices and license terms. -->
 <data>
     <xpath expr="/tree/field[@name='product']" position="after">
-        <field name="lot"/>
+        <field name="lot" expand="1"/>
     </xpath>
 </data>