diff --git a/addons/sale_project/models/project.py b/addons/sale_project/models/project.py
index 8e3cd0b65c7..dc4ac212e01 100755
--- a/addons/sale_project/models/project.py
+++ b/addons/sale_project/models/project.py
@@ -838,7 +838,7 @@ class ProjectTask(models.Model):
         (self - billable_task).partner_id = False
         super(ProjectTask, billable_task)._compute_partner_id()
 
-    @api.depends('partner_id.commercial_partner_id', 'sale_line_id.order_partner_id', 'parent_id.sale_line_id', 'project_id.sale_line_id', 'milestone_id.sale_line_id', 'allow_billable')
+    @api.depends('partner_id', 'sale_line_id.order_partner_id', 'parent_id.sale_line_id', 'project_id.sale_line_id', 'milestone_id.sale_line_id', 'allow_billable')
     def _compute_sale_line(self):
         for task in self:
             if not (task.allow_billable or task.parent_id.allow_billable):
diff --git a/addons/sale_timesheet/models/project.py b/addons/sale_timesheet/models/project.py
index f76a8352b75..32fa34ebd55 100644
--- a/addons/sale_timesheet/models/project.py
+++ b/addons/sale_timesheet/models/project.py
@@ -583,7 +583,7 @@ class ProjectTask(models.Model):
         for task in self:
             task.analytic_account_active = task.analytic_account_active or task.so_analytic_account_id.active
 
-    @api.depends('partner_id.commercial_partner_id', 'sale_line_id.order_partner_id', 'parent_id.sale_line_id', 'project_id.sale_line_id', 'allow_billable')
+    @api.depends('partner_id', 'sale_line_id.order_partner_id', 'parent_id.sale_line_id', 'project_id.sale_line_id', 'allow_billable')
     def _compute_sale_line(self):
         super()._compute_sale_line()
         for task in self: