diff --git a/models/sale_project.py b/models/sale_project.py
index ef56d8a7e7ee6096b473290bc0b12fd42ffdee51..5dce179583f86055a3efbd053d4cd0418d798c03 100644
--- a/models/sale_project.py
+++ b/models/sale_project.py
@@ -128,7 +128,7 @@ class SaleProject(models.Model):
                             }
                         )
                         for sol in sols:
-                            self.env["sale.order.line"].create(sol)
+                            self.env["sale.order.line"].with_context(default_project_id=False).create(sol)
             else:
                 super(SaleProject, self).update_order_lines()
         self.sale_order_id.clean_sale_order()