diff --git a/addons/account/account_invoice_view.xml b/addons/account/account_invoice_view.xml
index a74e82ef4a1..abf88954672 100644
--- a/addons/account/account_invoice_view.xml
+++ b/addons/account/account_invoice_view.xml
@@ -164,6 +164,7 @@
                                     <button name="invoice_open" states="draft,proforma" string="Validate"/>
                                     <button name="invoice_cancel" states="draft,proforma,sale,open" string="Cancel"/>
                                     <button name="action_cancel_draft" states="cancel" string="Set to Draft" type="object"/>
+                                    <button name='%(wizard_paid_open)d' type='action' string='Re-Open' states='paid'/>
                                 </group>
                             </group>
                         </page>
@@ -232,6 +233,7 @@
                                     <button name="invoice_open" states="draft,proforma" string="Create"/>
                                     <button name="invoice_cancel" states="draft,proforma,sale,open" string="Cancel"/>
                                     <button name="action_cancel_draft" states="cancel" string="Set to Draft" type="object"/>
+                                    <button name='%(wizard_paid_open)d' type='action' string='Re-Open' states='paid'/>
                                 </group>
                             </group>
                         </page>
diff --git a/addons/account/account_invoice_workflow.xml b/addons/account/account_invoice_workflow.xml
index 3e1e8afd8b1..89a62ac3a0d 100644
--- a/addons/account/account_invoice_workflow.xml
+++ b/addons/account/account_invoice_workflow.xml
@@ -6,7 +6,7 @@
             <field name="osv">account.invoice</field>
             <field name="on_create">True</field>
         </record>
-        
+
         <record id="act_draft" model="workflow.activity">
             <field name="wkf_id" ref="wkf"/>
             <field name="flow_start">True</field>
@@ -31,10 +31,16 @@ action_number()
 write({'state':'open'})</field>
             <field name="kind">function</field>
         </record>
+        <record model="workflow.activity" id="act_open_test">
+        	<field name="wkf_id" ref="wkf"/>
+        	<field name="name">open</field>
+        	<field name="action">write({'state':'open'})</field>
+        	<field name="kind">function</field>
+       	</record>
         <record id="act_paid" model="workflow.activity">
             <field name="wkf_id" ref="wkf"/>
             <field name="name">paid</field>
-            <field name="flow_stop">True</field>
+            <!--<field name="flow_stop">True</field>-->
             <field name="action">write({'state':'paid'})</field>
             <field name="kind">function</field>
         </record>
@@ -46,14 +52,14 @@ write({'state':'open'})</field>
 write({'state':'cancel'})</field>
             <field name="kind">function</field>
         </record>
-        
+
         <!--
 		<record model="workflow.transition" id="t1">
 			<field name="act_from" ref="act_draft"/>
 			<field name="act_to" ref="act_confirm"/>
 		</record>
 		-->
-        
+
         <record id="t3" model="workflow.transition">
             <field name="act_from" ref="act_draft"/>
             <field name="act_to" ref="act_proforma"/>
@@ -98,5 +104,15 @@ write({'state':'cancel'})</field>
             <field name="act_to" ref="act_cancel"/>
             <field name="signal">invoice_cancel</field>
         </record>
+        <record id="t13" model="workflow.transition">
+	        <field name="act_from" ref="act_paid"/>
+	        <field name="act_to" ref="act_open_test"/>
+	        <field name="signal">open_test</field>
+	    </record>
+	    <record id="t14" model="workflow.transition">
+	    	<field name="act_from" ref="act_open_test"/>
+	    	<field name="act_to" ref="act_cancel"/>
+	    	<field name="signal">invoice_cancel</field>
+	    </record>
     </data>
 </terp>
\ No newline at end of file
diff --git a/addons/account/account_wizard.xml b/addons/account/account_wizard.xml
index 6c18f8f9b61..b0e0604b300 100644
--- a/addons/account/account_wizard.xml
+++ b/addons/account/account_wizard.xml
@@ -77,5 +77,7 @@
         <wizard string="Use Models" model="account.model" name="account_use_models" menu="False" id="wizard_account_use_model"/>
         <menuitem action="wizard_account_use_model" type="wizard" parent="account.menu_finance_periodical_processing" id="menu_account_use_model"/>
 
+		<!-- account.invoice -->
+	    <wizard string="Open State" model="account.invoice" name="account.wizard_paid_open" menu="False" id="wizard_paid_open"/>
     </data>
 </terp>
diff --git a/addons/account/wizard/__init__.py b/addons/account/wizard/__init__.py
index 9e8dbf78088..08a8f142533 100644
--- a/addons/account/wizard/__init__.py
+++ b/addons/account/wizard/__init__.py
@@ -61,7 +61,11 @@ import wizard_account_chart
 import wizard_move_line_select
 
 import wizard_validate_account_move
-import wizard_use_model# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
+import wizard_use_model
+
+import wizard_state_open
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 
diff --git a/addons/account/wizard/wizard_state_open.py b/addons/account/wizard/wizard_state_open.py
new file mode 100644
index 00000000000..c8083ce338f
--- /dev/null
+++ b/addons/account/wizard/wizard_state_open.py
@@ -0,0 +1,64 @@
+##############################################################################
+#
+# Copyright (c) 2004-2008 TINY SPRL. (http://tiny.be) All Rights Reserved.
+#
+# #
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import wizard
+import pooler
+import netsvc
+
+form = '''<?xml version="1.0"?>
+<form string="Open Invoice">
+    <label string="Are you sure you want to open this invoice ?"/>
+    <newline/>
+    <label string="(Invoice should be unreconciled if you want to open it)"/>
+</form>'''
+
+fields = {
+}
+
+def _change_inv_state(self, cr, uid, data, context):
+    pool_obj = pooler.get_pool(cr.dbname)
+    data_inv = pool_obj.get('account.invoice').browse(cr, uid, data['ids'][0])
+    if data_inv.reconciled:
+        raise wizard.except_wizard('Warning', 'Invoice is already reconciled')
+    wf_service = netsvc.LocalService("workflow")
+    res = wf_service.trg_validate(uid, 'account.invoice', data['ids'][0], 'open_test', cr)
+    return {}
+
+class wiz_state_open(wizard.interface):
+    states = {
+        'init': {
+            'actions': [],
+            'result': {'type':'form', 'arch':form, 'fields':fields, 'state':[('yes','Yes'),('end','No')]}
+        },
+        'yes': {
+            'actions': [_change_inv_state],
+            'result': {'type':'state', 'state':'end'}
+        }
+    }
+wiz_state_open('account.wizard_paid_open')
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: