diff --git a/product/ERP5/Document/Ticket.py b/product/ERP5/Document/Ticket.py
index acc61bf5b69afe55287cb1bd9a3901b49bf88bc2..03732d17b69bdbbbb5045e5fdc98386fab699e93 100644
--- a/product/ERP5/Document/Ticket.py
+++ b/product/ERP5/Document/Ticket.py
@@ -54,8 +54,6 @@ class Ticket(Movement):
                       , PropertySheet.XMLObject
                       , PropertySheet.CategoryCore
                       , PropertySheet.DublinCore
-                      # Useless, replace by Arrow
-                      , PropertySheet.SaleOpportunity  
                       , PropertySheet.Arrow
                       , PropertySheet.Price
                       , PropertySheet.Movement