diff --git a/models/sale_project.py b/models/sale_project.py
index ff1bf506fa25d79516976f8b02e1bbe86adb7e23..4181b6b8ec509e7ef3b2a488d9755c5b94c4fef1 100644
--- a/models/sale_project.py
+++ b/models/sale_project.py
@@ -332,7 +332,7 @@ class SaleProject(models.Model):
                             "sale_project_id": self.id,
                         }
                     )
-                    self.env["sale.order.line"].create(data)
+                    self.env["sale.order.line"].with_context(default_project_id=False).create(data)
         self.sale_order_id.clean_sale_order()