diff --git a/www/lib/CoreLibs/ACL/Login.php b/www/lib/CoreLibs/ACL/Login.php
index 7e4ccf79..c8be7b2f 100644
--- a/www/lib/CoreLibs/ACL/Login.php
+++ b/www/lib/CoreLibs/ACL/Login.php
@@ -1633,7 +1633,7 @@ EOM;
 			$this->session->checkActiveSession() === true &&
 			!empty($_SESSION['DEFAULT_LOCALE'])
 		) {
-			$locale = $_SESSION['DEFAULT_LOCALE'] ?? '';
+			$locale = $_SESSION['DEFAULT_LOCALE'];
 		} else {
 			$locale = (defined('SITE_LOCALE') && !empty(SITE_LOCALE)) ?
 				SITE_LOCALE :