diff --git a/addons/account_asset/account_asset_invoice.py b/addons/account_asset/account_asset_invoice.py
index 7e2f24f0d0a..4b235c874c3 100644
--- a/addons/account_asset/account_asset_invoice.py
+++ b/addons/account_asset/account_asset_invoice.py
@@ -24,8 +24,8 @@ from openerp.osv import fields, osv
 class account_invoice(osv.osv):
 
     _inherit = 'account.invoice'
-    def action_number(self, cr, uid, ids, *args):
-        result = super(account_invoice, self).action_number(cr, uid, ids, *args)
+    def action_number(self, cr, uid, ids, *args, **kargs):
+        result = super(account_invoice, self).action_number(cr, uid, ids, *args, **kargs)
         for inv in self.browse(cr, uid, ids):
             self.pool.get('account.invoice.line').asset_create(cr, uid, inv.invoice_line)
         return result