diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index e5e4d5b634c..b6225de2913 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -465,6 +465,10 @@ class Conf
 		$this->bank->rappro->warning_delay=(isset($this->global->MAIN_DELAY_TRANSACTIONS_TO_CONCILIATE)?$this->global->MAIN_DELAY_TRANSACTIONS_TO_CONCILIATE:0)*24*60*60;
 		$this->bank->cheque->warning_delay=(isset($this->global->MAIN_DELAY_CHEQUES_TO_DEPOSIT)?$this->global->MAIN_DELAY_CHEQUES_TO_DEPOSIT:0)*24*60*60;
 
+		// For modules that want to disable top or left menu
+		if (! empty($this->global->MAIN_HIDE_TOP_MENU)) $this->dol_hide_topmenu=$this->global->MAIN_HIDE_TOP_MENU;
+		if (! empty($this->global->MAIN_HIDE_LEFT_MENU)) $this->dol_hide_leftmenu=$this->global->MAIN_HIDE_LEFT_MENU;
+
 		// For backward compatibility
 		if (isset($this->product))   $this->produit=$this->product;
 		if (isset($this->facture))   $this->invoice=$this->facture;
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 64068f20267..e5ebd58e2cf 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -891,11 +891,11 @@ if (! function_exists("llxHeader"))
 		top_htmlhead($head, $title, $disablejs, $disablehead, $arrayofjs, $arrayofcss);
 
 		// top menu and left menu area
-		if (empty($conf->global->MAIN_HIDE_TOP_MENU))
+		if (empty($conf->dol_hide_topmenu))
 		{
 			top_menu($head, $title, $target, $disablejs, $disablehead, $arrayofjs, $arrayofcss, $morequerystring);
 		}
-		if (empty($conf->global->MAIN_HIDE_LEFT_MENU))
+		if (empty($conf->dol_hide_leftmenu))
 		{
 			left_menu('', $help_url, '', '', 1, $title);
 		}