diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 15555ee19b7..0824379ab79 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -5810,7 +5810,7 @@ function info_admin($text, $infoonimgalt = 0, $nodiv = 0, $admin = '1', $morecss
  */
 function dol_print_error($db = null, $error = '', $errors = null)
 {
-	global $conf, $langs, $argv;
+	global $conf, $langs, $user, $argv;
 	global $dolibarr_main_prod;
 
 	$out = '';
@@ -5838,6 +5838,9 @@ function dol_print_error($db = null, $error = '', $errors = null)
 		if (isset($conf->global->MAIN_FEATURES_LEVEL)) {
 			$out .= "<b>".$langs->trans("LevelOfFeature").":</b> ".getDolGlobalInt('MAIN_FEATURES_LEVEL')."<br>\n";
 		}
+		if ($user instanceof User) {
+			$out .= "<b>".$langs->trans("Login").":</b> ".$user->login."<br>\n";
+		}
 		if (function_exists("phpversion")) {
 			$out .= "<b>".$langs->trans("PHP").":</b> ".phpversion()."<br>\n";
 		}