diff --git a/help_online/__openerp__.py b/help_online/__openerp__.py
index b0d02833..de1d7c03 100644
--- a/help_online/__openerp__.py
+++ b/help_online/__openerp__.py
@@ -43,6 +43,8 @@ the group 'Help writer', the module generate a button allowing the creation an
 help page.
 
 The help pages are created and managed via the website Module.
+
+Note: When updating the page prefix parameters, the record rules must be adapted.
     """,
     'data': [
         'data/help_auto_backup.xml',  # must always be the first
diff --git a/help_online/data/ir_config_parameter_data.xml b/help_online/data/ir_config_parameter_data.xml
index 94f859fa..3f3cf68f 100644
--- a/help_online/data/ir_config_parameter_data.xml
+++ b/help_online/data/ir_config_parameter_data.xml
@@ -1,25 +1,25 @@
 <?xml version='1.0' encoding='UTF-8' ?>
 <openerp>
 
-    <data noupdate="0">
+    <data noupdate="1">
         <record id="help_online_autobackup_path" model="ir.config_parameter">
             <field name="key">help_online_autobackup_path</field>
             <field name="value">False</field>
         </record>
     </data>
     
-    <data noupdate="0">
+    <data noupdate="1">
         <record id="help_online_page_prefix" model="ir.config_parameter">
             <field name="key">help_online_page_prefix</field>
             <field name="value">help</field>
         </record>
     </data>
     
-    <data noupdate="0">
+    <data noupdate="1">
         <record id="help_online_template_prefix" model="ir.config_parameter">
             <field name="key">help_online_template_prefix</field>
             <field name="value">help-template</field>
         </record>
     </data>
 
-</openerp>
\ No newline at end of file
+</openerp>
diff --git a/help_online/security/help_online_rules.xml b/help_online/security/help_online_rules.xml
index 92a70a7a..08880d9c 100644
--- a/help_online/security/help_online_rules.xml
+++ b/help_online/security/help_online_rules.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
-    <data>
+    <data noupdate="1">
 	    <record id="online_help_confidential_rule" model="ir.rule">
 	        <field name="name">Online Help Hidden by Default</field>
 	        <field name="model_id" ref="base.model_ir_ui_view"/>
@@ -29,4 +29,4 @@
 	        <field name="perm_create" eval="0"/><field name="perm_unlink" eval="0"/>
 	    </record>
     </data>
-</openerp>
\ No newline at end of file
+</openerp>