diff --git a/addons/mail/models/ir_actions.py b/addons/mail/models/ir_actions.py
index 5c27db9a08a..9156baf136c 100644
--- a/addons/mail/models/ir_actions.py
+++ b/addons/mail/models/ir_actions.py
@@ -126,6 +126,7 @@ class ServerActions(models.Model):
         if action.activity_date_deadline_range > 0:
             vals['date_deadline'] = fields.Date.context_today(action) + relativedelta(**{action.activity_date_deadline_range_type: action.activity_date_deadline_range})
         for record in records:
+            user = False
             if action.activity_user_type == 'specific':
                 user = action.activity_user_id
             elif action.activity_user_type == 'generic' and action.activity_user_field_name in record: