diff --git a/addons/sale_timesheet/models/product.py b/addons/sale_timesheet/models/product.py
index aeddf1bd2ce..88b98d97065 100644
--- a/addons/sale_timesheet/models/product.py
+++ b/addons/sale_timesheet/models/product.py
@@ -39,7 +39,7 @@ class ProductTemplate(models.Model):
     def _inverse_service_policy(self):
         for product in self:
             policy = product.service_policy
-            if not policy:
+            if not policy and not product.invoice_policy =='delivery':
                 product.invoice_policy = 'order'
                 product.service_type = 'manual'
             elif policy == 'ordered_timesheet':