diff --git a/addons/stock/models/stock_move_line.py b/addons/stock/models/stock_move_line.py
index 034af4ee6e5..6f97babadd8 100644
--- a/addons/stock/models/stock_move_line.py
+++ b/addons/stock/models/stock_move_line.py
@@ -780,6 +780,8 @@ class StockMoveLine(models.Model):
 
         # Does the same for empty move line to retrieve the ordered qty. for partially done moves
         # (as they are splitted when the transfer is done and empty moves don't have move lines).
+        if kwargs.get('strict'):
+            return aggregated_move_lines
         pickings = (self.picking_id | backorders)
         for empty_move in pickings.move_ids.filtered(
             lambda m: m.state == "cancel" and m.product_uom_qty
diff --git a/addons/stock/report/report_deliveryslip.xml b/addons/stock/report/report_deliveryslip.xml
index 4799f8a335a..016fc6e6453 100644
--- a/addons/stock/report/report_deliveryslip.xml
+++ b/addons/stock/report/report_deliveryslip.xml
@@ -119,7 +119,7 @@
                                     </t>
                                     <!-- If not printing lots/serial numbers => merge lines with same product+description+uom -->
                                     <t t-else="">
-                                        <t t-set="aggregated_lines" t-value="package_move_lines._get_aggregated_product_quantities()"/>
+                                        <t t-set="aggregated_lines" t-value="package_move_lines._get_aggregated_product_quantities(strict=True)"/>
                                         <t t-call="stock.stock_report_delivery_aggregated_move_lines"/>
                                     </t>
                                 </t>