diff --git a/jikimo_purchase_request/models/purchase_request.py b/jikimo_purchase_request/models/purchase_request.py
index 9518f4c9..8c863dec 100644
--- a/jikimo_purchase_request/models/purchase_request.py
+++ b/jikimo_purchase_request/models/purchase_request.py
@@ -116,7 +116,8 @@ class PurchaseRequestLine(models.Model):
         for pr in self:
             qty_to_buy = sum(pr.mapped("product_qty"))
             if pr.purchase_count > 0:
-                qty_to_buy -= sum(pr.mapped("purchase_lines.product_qty"))
+                 qty_to_buy -= sum(pr.mapped("purchase_lines").filtered(lambda po: po.state != 'cancel').mapped(
+                    "product_qty"))
             pr.qty_to_buy = qty_to_buy > 0.0
             pr.pending_qty_to_receive = qty_to_buy