diff --git a/addons/account/wizard/pos_box.py b/addons/account/wizard/pos_box.py
index 4740ef83dfe..1a70c173e03 100644
--- a/addons/account/wizard/pos_box.py
+++ b/addons/account/wizard/pos_box.py
@@ -40,6 +40,9 @@ class CashBox(osv.osv_memory):
         return {}
 
     def _create_bank_statement_line(self, cr, uid, box, record, context=None):
+        if record.state == 'confirm':
+            raise osv.except_osv(_('Error!'),
+                                 _("You cannot put/take money in/out for a bank statement which is closed."))
         values = self._compute_values_for_statement_line(cr, uid, box, record, context=context)
         return self.pool.get('account.bank.statement').write(cr, uid, [record.id], {'line_ids': [(0, False, values)]}, context=context)
 
@@ -56,6 +59,7 @@ class CashBoxIn(CashBox):
         if not record.journal_id.internal_account_id.id:
             raise osv.except_osv(_('Configuration Error'), _("You should have defined an 'Internal Transfer Account' in your cash register's journal!"))
         return {
+            'date': record.date,
             'statement_id': record.id,
             'journal_id': record.journal_id.id,
             'amount': box.amount or 0.0,
@@ -75,6 +79,7 @@ class CashBoxOut(CashBox):
             raise osv.except_osv(_('Configuration Error'), _("You should have defined an 'Internal Transfer Account' in your cash register's journal!"))
         amount = box.amount or 0.0
         return {
+            'date': record.date,
             'statement_id': record.id,
             'journal_id': record.journal_id.id,
             'amount': -amount if amount > 0.0 else amount,