diff --git a/htdocs/projet/agenda.php b/htdocs/projet/agenda.php
index d06cde2a04b..966d6f212ff 100644
--- a/htdocs/projet/agenda.php
+++ b/htdocs/projet/agenda.php
@@ -1,6 +1,7 @@
 <?php
 /* Copyright (C) 2005-2016 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2009 Regis Houssin        <regis.houssin@inodbox.com>
+ * Copyright (C) 2024		MDW							<mdeweerd@users.noreply.github.com>
  *
  * 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
@@ -83,7 +84,7 @@ if (!$user->hasRight('projet', 'lire')) {
  * Actions
  */
 
-$parameters = array('id'=>$socid);
+$parameters = array('id' => $socid);
 $reshook = $hookmanager->executeHooks('doActions', $parameters, $object, $action); // Note that $action and $object may have been modified by some hooks
 if ($reshook < 0) {
 	setEventMessages($hookmanager->error, $hookmanager->errors, 'errors');
@@ -129,7 +130,7 @@ print dol_get_fiche_head($head, 'agenda', $langs->trans("Project"), -1, ($object
 
 if (!empty($_SESSION['pageforbacktolist']) && !empty($_SESSION['pageforbacktolist']['project'])) {
 	$tmpurl = $_SESSION['pageforbacktolist']['project'];
-	$tmpurl = preg_replace('/__SOCID__/', $object->socid, $tmpurl);
+	$tmpurl = preg_replace('/__SOCID__/', (string) $object->socid, $tmpurl);
 	$linkback = '<a href="'.$tmpurl.(preg_match('/\?/', $tmpurl) ? '&' : '?'). 'restore_lastsearch_values=1">'.$langs->trans("BackToList").'</a>';
 } else {
 	$linkback = '<a href="'.DOL_URL_ROOT.'/projet/list.php?restore_lastsearch_values=1">'.$langs->trans("BackToList").'</a>';