diff --git a/account_usability/__openerp__.py b/account_usability/__openerp__.py
index 2637630..b11b213 100644
--- a/account_usability/__openerp__.py
+++ b/account_usability/__openerp__.py
@@ -50,5 +50,5 @@ This module has been written by Alexis de Lattre from Akretion <alexis.delattre@
     'depends': ['account'],
     'conflicts': ['account_invoice_overdue_filter'],
     'data': ['account_view.xml'],
-    'installable': True,
+    'installable': False,
 }
diff --git a/sale_stock_usability/__openerp__.py b/sale_stock_usability/__openerp__.py
index cd4142b..b6e8440 100644
--- a/sale_stock_usability/__openerp__.py
+++ b/sale_stock_usability/__openerp__.py
@@ -42,5 +42,5 @@ This module has been written by Alexis de Lattre from Akretion <alexis.delattre@
     'website': 'http://www.akretion.com',
     'depends': ['sale_stock'],
     'data': ['sale_stock_view.xml'],
-    'installable': True,
+    'installable': False,
 }
diff --git a/sale_usability/__openerp__.py b/sale_usability/__openerp__.py
index faae3b4..d430f7e 100644
--- a/sale_usability/__openerp__.py
+++ b/sale_usability/__openerp__.py
@@ -44,5 +44,5 @@ Please contact Alexis de Lattre from Akretion <alexis.delattre@akretion.com> for
     'data': [
         'sale_view.xml',
         ],
-    'installable': True,
+    'installable': False,
 }
diff --git a/stock_usability/__openerp__.py b/stock_usability/__openerp__.py
index d9b1ce3..a5a3f1e 100644
--- a/stock_usability/__openerp__.py
+++ b/stock_usability/__openerp__.py
@@ -48,5 +48,5 @@ This module has been written by Alexis de Lattre from Akretion <alexis.delattre@
         'procurement_view.xml',
         'security/ir.model.access.csv',
         ],
-    'installable': True,
+    'installable': False,
 }