diff --git a/htdocs/install/upgrade.php b/htdocs/install/upgrade.php
index 28aea7628e9..2df2c8db4b9 100644
--- a/htdocs/install/upgrade.php
+++ b/htdocs/install/upgrade.php
@@ -115,6 +115,10 @@ if (! GETPOST("action") || preg_match('/upgrade/i',GETPOST('action')))
 
     $db=getDoliDBInstance($conf->db->type,$conf->db->host,$conf->db->user,$conf->db->pass,$conf->db->name,$conf->db->port);
 
+    // Create the global $hookmanager object
+    include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
+    $hookmanager=new HookManager($db);
+
     if ($db->connected == 1)
     {
         print '<tr><td nowrap="nowrap">';
diff --git a/htdocs/install/upgrade2.php b/htdocs/install/upgrade2.php
index 47218300ad5..c40a8dfb4b8 100644
--- a/htdocs/install/upgrade2.php
+++ b/htdocs/install/upgrade2.php
@@ -107,6 +107,10 @@ if (! GETPOST("action") || preg_match('/upgrade/i',GETPOST('action')))
 
     $db=getDoliDBInstance($conf->db->type,$conf->db->host,$conf->db->user,$conf->db->pass,$conf->db->name,$conf->db->port);
 
+    // Create the global $hookmanager object
+    include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
+    $hookmanager=new HookManager($db);
+
     if ($db->connected != 1)
     {
         print '<tr><td colspan="4">'.$langs->trans("ErrorFailedToConnectToDatabase",$conf->db->name).'</td><td align="right">'.$langs->trans('Error').'</td></tr>';