diff --git a/htdocs/bom/lib/bom.lib.php b/htdocs/bom/lib/bom.lib.php
index a5be872a096..8f3cadeedc2 100644
--- a/htdocs/bom/lib/bom.lib.php
+++ b/htdocs/bom/lib/bom.lib.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2019       Maxime Kohlhaas         <maxime@atm-consulting.fr>
- * Copyright (C) 2019       Frédéric France         <frederic.france@netlogic.fr>
+ * Copyright (C) 2019-2021  Frédéric France         <frederic.france@netlogic.fr>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -41,17 +41,11 @@ function bomAdminPrepareHead()
 	$head[$h][2] = 'settings';
 	$h++;
 
-	$head[$h][0] = dol_buildpath("/admin/bom_extrafields.php", 1);
+	$head[$h][0] = DOL_URL_ROOT."/admin/bom_extrafields.php";
 	$head[$h][1] = $langs->trans("ExtraFields");
 	$head[$h][2] = 'bom_extrafields';
 	$h++;
 
-	/*$head[$h][0] = DOL_URL_ROOT."/bom/admin/about.php";
-	$head[$h][1] = $langs->trans("About");
-	$head[$h][2] = 'about';
-	$h++;
-	*/
-
 	// Show more tabs from modules
 	// Entries must be declared in modules descriptor with line
 	//$this->tabs = array(
diff --git a/htdocs/core/lib/cron.lib.php b/htdocs/core/lib/cron.lib.php
index 4207e6c3b4f..2d111e37ef8 100644
--- a/htdocs/core/lib/cron.lib.php
+++ b/htdocs/core/lib/cron.lib.php
@@ -34,12 +34,12 @@ function cronadmin_prepare_head()
 	$h = 0;
 	$head = array();
 
-	$head[$h][0] = dol_buildpath('/cron/admin/cron.php', 1);
+	$head[$h][0] = DOL_URL_ROOT.'/cron/admin/cron.php';
 	$head[$h][1] = $langs->trans("Miscellaneous");
 	$head[$h][2] = 'setup';
 	$h++;
 
-	$head[$h][0] = dol_buildpath('/cron/list.php?mode=modulesetup', 1);
+	$head[$h][0] = DOL_URL_ROOT.'/cron/list.php?mode=modulesetup';
 	$head[$h][1] = $langs->trans("Module2300Name");
 	$head[$h][2] = 'jobs';
 	$h++;
@@ -64,12 +64,12 @@ function cron_prepare_head(Cronjob $object)
 	$h = 0;
 	$head = array();
 
-	$head[$h][0] = dol_buildpath('/cron/card.php', 1).'?id='.$object->id;
+	$head[$h][0] = DOL_URL_ROOT.'/cron/card.php?id='.$object->id;
 	$head[$h][1] = $langs->trans("CronTask");
 	$head[$h][2] = 'card';
 	$h++;
 
-	$head[$h][0] = dol_buildpath('/cron/info.php', 1).'?id='.$object->id;
+	$head[$h][0] = DOL_URL_ROOT.'/cron/info.php?id='.$object->id;
 	$head[$h][1] = $langs->trans("Info");
 	$head[$h][2] = 'info';
 	$h++;