diff --git a/addons/plugin_thunderbird/plugin_thunderbird.xml b/addons/plugin_thunderbird/plugin_thunderbird.xml
index b57de9ccd45..5ad1f824a78 100644
--- a/addons/plugin_thunderbird/plugin_thunderbird.xml
+++ b/addons/plugin_thunderbird/plugin_thunderbird.xml
@@ -30,11 +30,11 @@
                         <ul>
                             <li>1. Save the Thunderbird plug-in.</li>
                             <li>2. From the Thunderbird menubar: Tools ­> Add-ons -> Screwdriver/Wrench Icon -> Install add-on from file...</li>
-                            <li>4. Select the plug-in (the file named openerp_plugin.xpi).</li>
-                            <li>5. Click "Install Now".</li>
-                            <li>6. Restart Thunderbird.</li>
-                            <li>7. From the Thunderbird menubar: OpenERP -> Configuration.</li>
-                            <li>8. Configure your openerp server.</li>
+                            <li>3. Select the plug-in (the file named openerp_plugin.xpi).</li>
+                            <li>4. Click "Install Now".</li>
+                            <li>5. Restart Thunderbird.</li>
+                            <li>6. From the Thunderbird menubar: OpenERP -> Configuration.</li>
+                            <li>7. Configure your openerp server.</li>
                         </ul>
                     </xpath>
                     <separator string="title" position="attributes">