diff --git a/addons/thunderbird/__openerp__.py b/addons/thunderbird/__openerp__.py
index c19eb45437e..f4262ccd96d 100644
--- a/addons/thunderbird/__openerp__.py
+++ b/addons/thunderbird/__openerp__.py
@@ -41,6 +41,6 @@
     "update_xml" : ['thunderbird_installer.xml',
                     'security/ir.model.access.csv'],
     "active": False,
-    "installable": True
+    "installable": True,
     "certificate" : "00899858104035139949",
 }