diff --git a/htdocs/install/upgrade.php b/htdocs/install/upgrade.php
index fce91f7925d..5132168c076 100644
--- a/htdocs/install/upgrade.php
+++ b/htdocs/install/upgrade.php
@@ -183,7 +183,7 @@ if (! GETPOST('action','aZ09') || preg_match('/upgrade/i',GETPOST('action','aZ09
         print '<tr><td>'.$langs->trans("ServerVersion").'</td>';
         print '<td align="right">'.$version.'</td></tr>';
         dolibarr_install_syslog("upgrade: " . $langs->transnoentities("ServerVersion") . ": " .$version);
-        if ($db->type == 'mysqli')
+        if ($db->type == 'mysqli' && function_exists('mysqli_get_charset'))
         {
         	$tmparray = $db->db->get_charset();
         	print '<tr><td>'.$langs->trans("ClientCharset").'</td>';