diff --git a/models/biocenys_project.py b/models/biocenys_project.py
index fdec51941eb8bfda97faf475e6fe20a143d1d25f..05ff98b99b117146135a4274ca89cff466568630 100644
--- a/models/biocenys_project.py
+++ b/models/biocenys_project.py
@@ -6,7 +6,7 @@ from odoo import fields, models, api
 
 class BiocenysProject(models.Model):
     _name = 'biocenys.project'
-    _inherit = ['mail.thread']
+    _inherit = ['mail.thread', 'mail.activity.mixin']
     _description = 'Projet Biocenys'
 
     # ------------------------------------------------------
diff --git a/views/biocenys_project.xml b/views/biocenys_project.xml
index acdccc2379f695bff82f72767a0fedb28113793d..d5d44570fc24c10419648e4bd6a278dbb1764252 100755
--- a/views/biocenys_project.xml
+++ b/views/biocenys_project.xml
@@ -117,6 +117,7 @@
 
                     <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>