diff --git a/models/scop_liste_ministere.py b/models/scop_liste_ministere.py
index 5900dd04a3d4f44f838185aeaca5fce74997829b..31d33507d687784c8a150379911a12509778e9af 100644
--- a/models/scop_liste_ministere.py
+++ b/models/scop_liste_ministere.py
@@ -13,7 +13,7 @@ from odoo.tools.safe_eval import safe_eval
 
 class ScopListeMinistere(models.Model):
     _name = "scop.liste.ministere"
-    _inherit = ["mail.thread"]
+    _inherit = ["mail.thread", "mail.activity.mixin"]
     _description = "Dossier liste ministère"
     _order = "year desc, partner_id"
 
diff --git a/views/scop_liste_ministere.xml b/views/scop_liste_ministere.xml
index ed5dd56e57fe98fc69c2b91b77dd130a7caaaa6d..5ea7bf697e6c362ff86a19844f962df3b13afd99 100644
--- a/views/scop_liste_ministere.xml
+++ b/views/scop_liste_ministere.xml
@@ -1600,6 +1600,7 @@
 
                     <div class="oe_chatter">
                         <field name="message_follower_ids" widget="mail_followers" />
+                        <field name="activity_ids" widget="mail_activity" />
                         <field name="message_ids" widget="mail_thread" />
                     </div>