diff --git a/addons/account_voucher/voucher.py b/addons/account_voucher/voucher.py
index ff8fcc664c1..4cc44433ff8 100644
--- a/addons/account_voucher/voucher.py
+++ b/addons/account_voucher/voucher.py
@@ -97,9 +97,9 @@ class account_voucher(osv.osv):
 
         'line_ids':fields.one2many('account.voucher.line','voucher_id','Voucher Lines', readonly=True, states={'draft':[('readonly',False)]}),
         'line_cr_ids':fields.one2many('account.voucher.line','voucher_id','Credits',
-            domain=[('type','=','cr')], context={'default_type':'cr'}),
+            domain=[('type','=','cr')], context={'default_type':'cr'}, readonly=True, states={'draft':[('readonly',False)]}),
         'line_dr_ids':fields.one2many('account.voucher.line','voucher_id','Debits',
-            domain=[('type','=','dr')], context={'default_type':'dr'}),
+            domain=[('type','=','dr')], context={'default_type':'dr'}, readonly=True, states={'draft':[('readonly',False)]}),
         'period_id': fields.many2one('account.period', 'Period', required=True, readonly=True, states={'draft':[('readonly',False)]}),
         'narration':fields.text('Narration', readonly=True, states={'draft':[('readonly',False)]}),
         'currency_id': fields.many2one('res.currency', 'Currency', required=True, readonly=True, states={'draft':[('readonly',False)]}),
diff --git a/addons/account_voucher/voucher_sales_purchase_view.xml b/addons/account_voucher/voucher_sales_purchase_view.xml
index 387dd28f77a..f84566255d0 100644
--- a/addons/account_voucher/voucher_sales_purchase_view.xml
+++ b/addons/account_voucher/voucher_sales_purchase_view.xml
@@ -17,7 +17,7 @@
                     </group>
                     <notebook colspan="4">
                         <page string="Sales Information">
-                            <field name="line_ids" on_change="onchange_price(line_ids, tax_id, parent.partner_id)" default_get="{'journal_id':journal_id, 'partner_id':partner_id}" colspan="4" nolabel="1" height="180">
+                            <field name="line_cr_ids" on_change="onchange_price(line_cr_ids, tax_id, parent.partner_id)" default_get="{'journal_id':journal_id, 'partner_id':partner_id}" colspan="4" nolabel="1" height="180">
                                 <tree string="Sales Lines" editable="bottom">
                                     <field name="account_id" domain="[('user_type.report_type','=','income'),('type','!=','view')]" widget="selection"/>
                                     <field name="name"/>