diff --git a/addons/sale/models/sale.py b/addons/sale/models/sale.py
index d0d0dcc8334..757cdad9cad 100644
--- a/addons/sale/models/sale.py
+++ b/addons/sale/models/sale.py
@@ -1017,9 +1017,6 @@ class SaleOrderLine(models.Model):
         """
         result = {}
 
-        # The delivered quantity of Sales Lines in 'manual' mode should not be erased
-        self = self.filtered(lambda sol: sol.product_id.service_type != 'manual')
-
         # avoid recomputation if no SO lines concerned
         if not self:
             return result