diff --git a/htdocs/product/note.php b/htdocs/product/note.php
index fad4df3500b..b758f414035 100644
--- a/htdocs/product/note.php
+++ b/htdocs/product/note.php
@@ -76,23 +76,23 @@ include DOL_DOCUMENT_ROOT.'/core/actions_setnotes.inc.php'; // Must be include,
 
 $form = new Form($db);
 
-$helpurl = '';
+$help_url = '';
 if (GETPOST("type") == '0' || ($object->type == Product::TYPE_PRODUCT)) {
-	$helpurl = 'EN:Module_Products|FR:Module_Produits|ES:Módulo_Productos';
+	$help_url = 'EN:Module_Products|FR:Module_Produits|ES:Módulo_Productos';
 }
 if (GETPOST("type") == '1' || ($object->type == Product::TYPE_SERVICE)) {
-	$helpurl = 'EN:Module_Services_En|FR:Module_Services|ES:Módulo_Servicios';
+	$help_url = 'EN:Module_Services_En|FR:Module_Services|ES:Módulo_Servicios';
 }
 
 $title = $langs->trans('ProductServiceCard');
 $shortlabel = dol_trunc($object->label, 16);
 if (GETPOST("type") == '0' || ($object->type == Product::TYPE_PRODUCT)) {
 	$title = $langs->trans('Product')." ".$shortlabel." - ".$langs->trans('Notes');
-	$helpurl = 'EN:Module_Products|FR:Module_Produits|ES:Módulo_Productos';
+	$help_url = 'EN:Module_Products|FR:Module_Produits|ES:Módulo_Productos';
 }
 if (GETPOST("type") == '1' || ($object->type == Product::TYPE_SERVICE)) {
 	$title = $langs->trans('Service')." ".$shortlabel." - ".$langs->trans('Notes');
-	$helpurl = 'EN:Module_Services_En|FR:Module_Services|ES:Módulo_Servicios';
+	$help_url = 'EN:Module_Services_En|FR:Module_Services|ES:Módulo_Servicios';
 }
 
 llxHeader('', $title, $help_url);