diff --git a/interface/web/login/index.php b/interface/web/login/index.php
index 357a040463c60e0aebca3f2c822ad9de15d6450c..548d20df4cb5f85b5930a0146d3092647e921a12 100644
--- a/interface/web/login/index.php
+++ b/interface/web/login/index.php
@@ -57,6 +57,7 @@ class login_index {
 		
 		// Maintenance mode
 		$maintenance_mode = false;
+		$maintenance_mode_error = '';
 		$app->uses('ini_parser,getconf');
 		$server_config_array = $app->getconf->get_global_config('misc');
 		if($server_config_array['maintenance_mode'] == 'y'){