diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index 1dbad3d..f0ec9e5 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -390,7 +390,7 @@ defined('FM_FILE_EXTENSION') || define('FM_FILE_EXTENSION', $allowed_file_extens
 defined('FM_UPLOAD_EXTENSION') || define('FM_UPLOAD_EXTENSION', $allowed_upload_extensions);
 defined('FM_EXCLUDE_ITEMS') || define('FM_EXCLUDE_ITEMS', (version_compare(PHP_VERSION, '7.0.0', '<') ? serialize($exclude_items) : $exclude_items));
 defined('FM_DOC_VIEWER') || define('FM_DOC_VIEWER', $online_viewer);
-define('FM_READONLY', $use_auth && !empty($readonly_users) && isset($_SESSION[FM_SESSION_ID]['logged']) && in_array($_SESSION[FM_SESSION_ID]['logged'], $readonly_users));
+define('FM_READONLY', $global_readonly || ($use_auth && !empty($readonly_users) && isset($_SESSION[FM_SESSION_ID]['logged']) && in_array($_SESSION[FM_SESSION_ID]['logged'], $readonly_users)));
 define('FM_IS_WIN', DIRECTORY_SEPARATOR == '\\');
 
 // always use ?p=