diff --git a/TODO b/TODO
index 2a7fafbf54..19845c18fa 100644
--- a/TODO
+++ b/TODO
@@ -3,3 +3,4 @@
 - Add form_relate from party to party's purchase
 - Add historization of quotation
 - Allow to customize purchase.product_supplier to handle delivery_time depending of quantity
+- Cancel draft moves and draft invoices when canceling purchase order