diff --git a/addons/sale_timesheet/models/sale_order.py b/addons/sale_timesheet/models/sale_order.py
index b0da56c02fa..fb1fd232ed8 100644
--- a/addons/sale_timesheet/models/sale_order.py
+++ b/addons/sale_timesheet/models/sale_order.py
@@ -137,7 +137,7 @@ class SaleOrderLine(models.Model):
     _inherit = "sale.order.line"
 
     task_id = fields.Many2one('project.task', 'Task', index=True, help="Task generated by the sales order item")
-    is_service = fields.Boolean("Is a Service", compute='_compute_is_service', store=True, help="Sales Order item should generate a task and/or a project, depending on the product settings.")
+    is_service = fields.Boolean("Is a Service", compute='_compute_is_service', store=True, compute_sudo=True, help="Sales Order item should generate a task and/or a project, depending on the product settings.")
 
     @api.multi
     @api.depends('product_id.type')