diff --git a/addons/sale_timesheet/models/sale_order.py b/addons/sale_timesheet/models/sale_order.py
index 2fbf310a615..365118bdeb0 100644
--- a/addons/sale_timesheet/models/sale_order.py
+++ b/addons/sale_timesheet/models/sale_order.py
@@ -126,7 +126,7 @@ class SaleOrderLine(models.Model):
             :param start_date: the start date of the period
             :param end_date: the end date of the period
         """
-        lines_by_timesheet = self.filtered(lambda sol: sol.product_id._is_delivered_timesheet())
+        lines_by_timesheet = self.filtered(lambda sol: sol.product_id and sol.product_id._is_delivered_timesheet())
         domain = lines_by_timesheet._timesheet_compute_delivered_quantity_domain()
         domain = expression.AND([domain, [
             '|',
@@ -139,5 +139,4 @@ class SaleOrderLine(models.Model):
         mapping = lines_by_timesheet.sudo()._get_delivered_quantity_by_analytic(domain)
 
         for line in lines_by_timesheet:
-            if line.product_id._is_delivered_timesheet():
-                line.qty_to_invoice = mapping.get(line.id, 0.0)
+            line.qty_to_invoice = mapping.get(line.id, 0.0)
diff --git a/addons/sale_timesheet/tests/test_sale_timesheet.py b/addons/sale_timesheet/tests/test_sale_timesheet.py
index 28c8a50abe3..8ba937d7121 100644
--- a/addons/sale_timesheet/tests/test_sale_timesheet.py
+++ b/addons/sale_timesheet/tests/test_sale_timesheet.py
@@ -393,6 +393,12 @@ class TestSaleTimesheet(TestCommonSaleTimesheet):
             'partner_shipping_id': self.partner_a.id,
             'pricelist_id': self.company_data['default_pricelist'].id,
         })
+        # Section Line
+        so_line_ordered_project_only = self.env['sale.order.line'].create({
+            'name': "Section Name",
+            'order_id': sale_order.id,
+            'display_type': 'line_section',
+        })
         so_line_deliver_global_project = self.env['sale.order.line'].create({
             'name': self.product_delivery_timesheet2.name,
             'product_id': self.product_delivery_timesheet2.id,