diff --git a/addons/account/account_cash_statement.py b/addons/account/account_cash_statement.py
index 86b00ad98b3..ff0f0117ff5 100644
--- a/addons/account/account_cash_statement.py
+++ b/addons/account/account_cash_statement.py
@@ -32,6 +32,7 @@ class account_cashbox_line(osv.osv):
 
     _name = 'account.cashbox.line'
     _description = 'CashBox Line'
+    _rec_name = 'number'
 
     def _sub_total(self, cr, uid, ids, name, arg, context=None):