diff --git a/stock_available_immediately/__openerp__.py b/stock_available_immediately/__openerp__.py
index 65c402d98..59ee9e846 100644
--- a/stock_available_immediately/__openerp__.py
+++ b/stock_available_immediately/__openerp__.py
@@ -37,5 +37,5 @@ Immediately usable is computed : Quantity on Hand - Outgoing Stock.
 	"demo_xml" : [],
 	"update_xml" : ["product_view.xml", ],
 	"active": False,
-	"installable": False
+	"installable": True
 }
diff --git a/stock_available_immediately/product.py b/stock_available_immediately/product.py
index 3c7891ba8..d1c3fd241 100644
--- a/stock_available_immediately/product.py
+++ b/stock_available_immediately/product.py
@@ -21,10 +21,10 @@
 
 import decimal_precision as dp
 
-from osv import fields, osv
+from openerp.osv import orm, fields
 
 
-class ProductImmediatelyUsable(osv.osv):
+class product_immediately_usable(orm.Model):
     """
     Inherit Product in order to add an "immediately usable quantity"
     stock field
@@ -49,7 +49,7 @@ class ProductImmediatelyUsable(osv.osv):
             field_names.append('qty_available')
             field_names.append('outgoing_qty')
 
-        res = super(ProductImmediatelyUsable, self)._product_available(
+        res = super(product_immediately_usable, self)._product_available(
             cr, uid, ids, field_names, arg, context)
 
         if 'immediately_usable_qty' in field_names:
@@ -141,4 +141,4 @@ class ProductImmediatelyUsable(osv.osv):
                  "Computed as: Quantity On Hand - Outgoing."),
     }
 
-ProductImmediatelyUsable()
+product_immediately_usable()
diff --git a/stock_available_immediately/product_view.xml b/stock_available_immediately/product_view.xml
index 147a05fe3..44c54e912 100644
--- a/stock_available_immediately/product_view.xml
+++ b/stock_available_immediately/product_view.xml
@@ -13,7 +13,7 @@
             <field name="name">product.normal.stock.active.qty.form.inherit</field>
             <field name="model">product.product</field>
             <field name="type">form</field>
-            <field name="inherit_id" ref="stock.view_normal_stock_property_form"/>
+            <field name="inherit_id" ref="product.product_normal_form_view"/>
             <field name="arch" type="xml">
                 <field name="virtual_available" position="after">
                     <newline/>