diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index c9c6c2d4cde..115155e629a 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -502,7 +502,7 @@ if (! defined('NOLOGIN'))
 		$allowedmethodtopostusername = 2;
 		if (defined('MAIN_AUTHENTICATION_POST_METHOD')) $allowedmethodtopostusername = constant('MAIN_AUTHENTICATION_POST_METHOD');
 		$usertotest		= (! empty($_COOKIE['login_dolibarr']) ? $_COOKIE['login_dolibarr'] : GETPOST("username","alpha",$allowedmethodtopostusername));
-		$passwordtotest	= GETPOST('password','none',2);
+		$passwordtotest	= GETPOST('password','none',$allowedmethodtopostusername);
 		$entitytotest	= (GETPOST('entity','int') ? GETPOST('entity','int') : (!empty($conf->entity) ? $conf->entity : 1));
 
 		// Define if we received data to test the login.