diff --git a/addons/project_planning/project_planning_demo.xml b/addons/project_planning/project_planning_demo.xml
index 54c5ec705cb..4943ca0e5e3 100644
--- a/addons/project_planning/project_planning_demo.xml
+++ b/addons/project_planning/project_planning_demo.xml
@@ -8,7 +8,7 @@
             <field name="name">Project_Planning</field>
             <field name="business_days">20</field>
             <field name="date_from" eval="time.strftime('%Y-%m-01')"/>
-            <field name="date_to" eval="time.strftime('%Y-%m-30')"/>
+            <field name="date_to" eval="time.strftime('%Y-%m-28')"/>
             <field name="state">open</field>
             <field name="user_id" ref="project.res_users_project_manager"/>
         </record>