diff --git a/stock_available_immediately/__init__.py b/stock_available_immediately/__init__.py
index 46f811108c70..867607b7d81c 100755
--- a/stock_available_immediately/__init__.py
+++ b/stock_available_immediately/__init__.py
@@ -17,5 +17,3 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-
-from . import product
diff --git a/stock_available_immediately/product.py b/stock_available_immediately/product.py
deleted file mode 100644
index 491e44d1d19b..000000000000
--- a/stock_available_immediately/product.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# -*- coding: utf-8 -*-
-##############################################################################
-#
-#    Copyright 2010-2012 Camptocamp SA
-#    Copyright (C) 2011 Akretion Sébastien BEAU <sebastien.beau@akretion.com>
-#
-#    This program is free software: you can redistribute it and/or modify
-#    it under the terms of the GNU Affero General Public License as
-#    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
-#
-#    You should have received a copy of the GNU Affero General Public License
-#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-##############################################################################
-
-from openerp import models
-
-
-class Product(models.Model):
-    """Subtract incoming qty from immediately_usable_qty"""
-    _inherit = 'product.product'
-
-    def _immediately_usable_qty(self):
-        """Ignore the incoming goods in the quantity available to promise"""
-        super(Product, self)._immediately_usable_qty()
-        for product in self:
-            product.immediately_usable_qty -= product.incoming_qty