diff --git a/core/config.class.inc.php b/core/config.class.inc.php
index 079ae5385..c521dd07b 100644
--- a/core/config.class.inc.php
+++ b/core/config.class.inc.php
@@ -211,6 +211,14 @@ class Config
 			'source_of_value'     => '',
 			'show_in_conf_sample' => true,
 		],
+		'allowed_login_types'                       => [
+			'type'                => 'string',
+			'description'         => 'List of login types allowed (separated by | ): form, external, basic, token',
+			'default'             => '',
+			'value'               => '',
+			'source_of_value'     => '',
+			'show_in_conf_sample' => true,
+		],
 		'app_icon_url'                       => [
 			'type'                => 'string',
 			'description'         => 'Hyperlink to redirect the user when clicking on the application icon (in the main window, or login/logoff pages)',