diff --git a/addons/account/wizard/pos_box.py b/addons/account/wizard/pos_box.py
index 1d6d13e140b..874a8e3b7c9 100644
--- a/addons/account/wizard/pos_box.py
+++ b/addons/account/wizard/pos_box.py
@@ -67,6 +67,8 @@ class CashBoxIn(CashBox):
 class CashBoxOut(CashBox):
     _name = 'cash.box.out'
 
+    _columns = CashBox._columns.copy()
+
     def _compute_values_for_statement_line(self, cr, uid, box, record, context=None):
         amount = box.amount or 0.0
         return {