diff --git a/htdocs/includes/modules/DolibarrModules.class.php b/htdocs/includes/modules/DolibarrModules.class.php
index 88c05f5306c..1149c489636 100644
--- a/htdocs/includes/modules/DolibarrModules.class.php
+++ b/htdocs/includes/modules/DolibarrModules.class.php
@@ -997,7 +997,7 @@ class DolibarrModules
 			$menu->type=$this->menu[$key]['type'];
 			$menu->mainmenu=$this->menu[$key]['mainmenu'];
 			$menu->titre=$this->menu[$key]['titre'];
-			$menu->leftmenu=$this->menu[$key]['leftmenu'];
+			$menu->leftmenu=isset($this->menu[$key]['leftmenu'])?$this->menu[$key]['leftmenu']:0;
 			$menu->url=$this->menu[$key]['url'];
 			$menu->langs=$this->menu[$key]['langs'];
 			$menu->position=$this->menu[$key]['position'];