diff --git a/product/ERP5/PropertySheet/TradeCondition.py b/product/ERP5/PropertySheet/TradeCondition.py
index fa4ecd4c280946b7ec6857e0fd113e57dc7c1868..1464ca2cede235cfc11c26de0a63821563bd73ca 100644
--- a/product/ERP5/PropertySheet/TradeCondition.py
+++ b/product/ERP5/PropertySheet/TradeCondition.py
@@ -68,5 +68,6 @@ class TradeCondition:
   )
 
   _categories = ( 'group', 'activity', 'incoterm',
-                  'price_currency', 'delivery_mode', )
+                  'price_currency', 'delivery_mode',
+                  'trade_condition_type',  )