diff --git a/addons/account/account.py b/addons/account/account.py
index 790d9adc15c..0b2aa125a0a 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -289,8 +289,6 @@ class account_account(osv.osv):
         'check_history': fields.boolean('Display History',
             help="Check this box if you want to print all entries when printing the General Ledger, "\
             "otherwise it will only print its balance."),
-         'merge_invoice': fields.boolean('Merge Invoice Entries',help="Check this box if you want that all lines of "\
-            "a customer or supplier invoice using this account are created in one line only"),
     }
 
     def _default_company(self, cr, uid, context={}):
diff --git a/addons/account/account_view.xml b/addons/account/account_view.xml
index 600114e90bd..41fc73ca29d 100644
--- a/addons/account/account_view.xml
+++ b/addons/account/account_view.xml
@@ -130,7 +130,6 @@
                             <field name="reconcile"/>
                             <field name="active" select="2"/>
                             <field name="check_history"/>
-                            <field name="merge_invoice" select="2"/>
                             <newline/>
                             <newline/>
                             <field colspan="4" name="tax_ids" domain="[('parent_id','=',False)]"/>
diff --git a/addons/account/invoice.py b/addons/account/invoice.py
index f6cccdcf2f0..c80cda3fe6d 100644
--- a/addons/account/invoice.py
+++ b/addons/account/invoice.py
@@ -431,7 +431,6 @@ class account_invoice(osv.osv):
     def action_move_create(self, cr, uid, ids, *args):
         ait_obj = self.pool.get('account.invoice.tax')
         cur_obj = self.pool.get('res.currency')
-        acc_obj = self.pool.get('account.account')
         self.button_compute(cr, uid, ids, context={}, set_total=False)
         for inv in self.browse(cr, uid, ids):
             if inv.move_id:
@@ -479,11 +478,7 @@ class account_invoice(osv.osv):
             # create one move line for the total and possibly adjust the other lines amount
             total = 0
             total_currency = 0
-            key_line=[]
             for i in iml:
-                if 'account_id' in i and 'taxes' in i:
-                    if not (i['account_id'],i['taxes']) in key_line:
-                        key_line.append((i['account_id'],i['taxes']))
                 if inv.currency_id.id != company_currency:
                     i['currency_id'] = inv.currency_id.id
                     i['amount_currency'] = i['price']
@@ -504,36 +499,6 @@ class account_invoice(osv.osv):
             acc_id = inv.account_id.id
 
             name = inv['name'] or '/'
-            iml_temp=[]
-            move_list=[]
-
-            for item in key_line:
-                move_temp={}
-                if acc_obj.browse(cr,uid,item[0]).merge_invoice:
-                    repeat=False
-                    for move_line in iml:
-                        if (move_line.has_key('account_id') and move_line['account_id']==item[0]) and ('taxes' in move_line and move_line['taxes']==item[1]):
-                            move_list.append(move_line)
-                            if repeat:
-                                for key in move_line:
-                                    if key in ['name','amount_currency','price_unit','price','quantity']:
-                                        if key=='name':
-                                            move_temp[key]=move_temp[key] + "," +move_line[key]
-                                        else:
-                                            move_temp[key] +=move_line[key]
-                            else:
-                                for key in move_line:
-                                    move_temp[key]=move_line[key]
-                                repeat=True
-                if move_temp:
-                    iml_temp.append(move_temp)
-
-            if len(iml_temp)<len(move_list):
-                for old_elem in move_list:
-                    iml.remove(old_elem)
-                for new_elem in iml_temp:
-                    iml.append(new_elem)
-
             totlines = False
             if inv.payment_term:
                 totlines = self.pool.get('account.payment.term').compute(cr,