diff --git a/modules/project_plan/view/allocation_tree.xml b/modules/project_plan/view/allocation_tree.xml
index cebbab2468..757a0e5737 100644
--- a/modules/project_plan/view/allocation_tree.xml
+++ b/modules/project_plan/view/allocation_tree.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. -->
 <tree>
-    <field name="employee"/>
+    <field name="employee" expand="1"/>
     <field name="percentage"/>
-    <field name="work"/>
+    <field name="work" expand="1"/>
 </tree>