diff --git a/bot.php b/bot.php
index 7245d9f..5edc65b 100755
--- a/bot.php
+++ b/bot.php
@@ -1,129 +1,131 @@
 #!/usr/bin/php
 <?php
 # Copyright (C) 2018 Valerio Bozzolan
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
 # published by the Free Software Foundation, either version 3 of the
 # License, or (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU Affero General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 // autoload boz-mw
 include 'boz-mw/autoload.php';
 
 // load configuration
 include 'config.php';
 
 // groups on Meta
 $META_GROUPS = [
 	'S'   => 'steward',
 ];
 
 // groups on Italian Wikipedia
 $WIT_GROUPS = [
 	'B'   => 'bureaucrat',
 	'CU'  => 'checkuser',
 	'A'   => 'sysop',
 	'AI'  => 'interface-admin',
 ];
 
 // legend
 $LEGEND = [
 	'B'   => "burocrate",
 	'CU'  => "check user",
 	'A'   => "amministratore",
 	'AI'  => "amministratore dell'interfaccia",
 ];
 
 // all groups
 $GROUPS = array_merge( $META_GROUPS, $WIT_GROUPS );
 
 // user list
 $users = [];
 
 // counter indexed by group name
 $counts = [];
 foreach( $GROUPS as $group ) {
 	$counts[ $group ] = 0;
 }
 
 // choosen wikis
 $wit  = \wm\WikipediaIt::instance();
 
 $lists = [
 	'allusers',
 	'globalallusers',
 ];
 
 // fetch all the sysops, checkusers, etc. from Italian wikipedia
 // https://it.wikipedia.org/w/api.php?action=help&modules=query%2Ballusers
 $results = $wit->createQuery( [
 	'action'   => 'query',
 	'list'     => $lists,
 
 	// allusers
 	'auprop'   => 'groups',
 	'augroup'  => array_values( $WIT_GROUPS ),
 	'aulimit'  => 400,
 
 	// globalallusers
 	'aguprop'  => 'groups',
 	'agugroup' => array_values( $META_GROUPS ),
 	'agulimit' => 200,
 ] );
 
 // query continuation
 foreach( $results->getGenerator() as $result ) {
 	foreach( $lists as $list ) {
 		foreach( $result->query->{ $list } as $user ) {
 			$name = $user->name;
 			if( ! isset( $users[ $name ] ) ) {
 				$users[ $name ] = [];
 			}
 			if( isset( $user->groups ) ) {
 				foreach( $user->groups as $group ) {
 					$legend = array_search( $group, $GROUPS, true );
 					if( $legend ) {
 						$users[ $name ][] = $legend;
 						$counts[ $group ]++;
 					}
 				}
 			}
 		}
 	}
 }
 
 // stats message
 $stats = [];
 foreach( $counts as $group => $count ) {
 	$stats[] = "$group: $count";
 }
 $stats = implode( ", ", $stats );
 
 try {
 
 	$wit->login();
 
 	$wit->edit( [
 		'title'         => MARKADMINS_PAGE,
 		'summary'       => "Bot: aggiornamento elenco utenti: $stats",
 		'text'          => json_encode( [ 'legend' => $LEGEND, 'users' => $users ] ),
 		'contentformat' => 'application/json',
 		'bot'           => 1,
 	] );
 
 } catch( Exception $e ) {
 
 	\cli\Log::error( sprintf(
 		"something bad happened: %s",
 		$e->getMessage()
 	) );
+
+	exit( 1 );
 }
 
 \cli\Log::info( $stats );