diff --git a/stock_request/models/stock_request.py b/stock_request/models/stock_request.py
index f1c545398..099a0b3c6 100644
--- a/stock_request/models/stock_request.py
+++ b/stock_request/models/stock_request.py
@@ -171,7 +171,14 @@ class StockRequest(models.Model):
     )
     def _compute_qty(self):
         for request in self:
-            done_qty = sum(request.allocation_ids.mapped("allocated_product_qty"))
+            incoming_qty = 0.0
+            other_qty = 0.0
+            for allocation in request.allocation_ids:
+                if allocation.stock_move_id.picking_code == "incoming":
+                    incoming_qty += allocation.allocated_product_qty
+                else:
+                    other_qty += allocation.allocated_product_qty
+            done_qty = abs(other_qty - incoming_qty)
             open_qty = sum(request.allocation_ids.mapped("open_product_qty"))
             uom = request.product_id.uom_id
             request.qty_done = uom._compute_quantity(done_qty, request.product_uom_id)