diff --git a/addons/project/project_view.xml b/addons/project/project_view.xml
index f864e207141..56d1b27561c 100644
--- a/addons/project/project_view.xml
+++ b/addons/project/project_view.xml
@@ -218,7 +218,7 @@
             <field name="name">project.project.kanban</field>
             <field name="model">project.project</field>
             <field name="arch" type="xml">
-                <kanban>
+                <kanban version="7.0" class="oe_background_grey">
                     <field name="effective_hours"/>
                     <field name="planned_hours"/>
                     <field name="name"/>