diff --git a/www/domain-plan.php b/www/domain-plan.php
index 447a9f2..6fece31 100644
--- a/www/domain-plan.php
+++ b/www/domain-plan.php
@@ -1,105 +1,117 @@
 <?php
 # Copyright (C) 2018, 2019, 2020 Valerio Bozzolan
 # KISS Libre Hosting Panel
 #
 # 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 General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 /*
  * This is the single e-mail forwarding edit page
  */
 
 // load framework
 require '../load.php';
 
 // wanted informations from the templates
 $domain = null;
 $plan   = null;
 
 // URL paramenters (just domain)
 list( $domain_name ) = url_parts( 1 );
 
 // eventually retrieve domain from database
 $domain = ( new DomainAPI() )
 	->select( [
 		'domain.domain_ID',
 		'domain_name',
 		'plan.plan_ID',
 		'plan_name',
 		'plan_mailboxes',
 		'plan_mailforwards',
 		'plan_databases',
 		'plan_ftpusers',
 		'plan_mailboxquota',
 		'plan_yearlyprice',
 	] )
 	->whereDomainName( $domain_name )
 	->whereDomainIsVisible()
 	->joinPlan( 'LEFT' )
 	->queryRow();
 
 // no domain no party
 if( !$domain ) {
 	PageNotFound::spawn();
 }
 
 // save destination action
 if( is_action( 'domain-plan-save' ) ) {
 
 	// check privileges
 	require_permission( 'edit-domain-all' );
 
 	// check if the submitted request has sense
 	$new_plan_uid = $_POST['plan_uid'] ?? null;
 	if( !$new_plan_uid || !is_string( $new_plan_uid ) ) {
 		BadRequest::spawn();
 	}
 
 	// check if the new Plan exists
 	$new_plan = ( new PlanAPI() )
 		->wherePlanUID( $new_plan_uid )
 		->queryRow();
 
 	// no Plan no party
 	if( !$new_plan ) {
 		BadRequest::spawn( __( "Missing Plan" ) );
 	}
 
+	query( 'START TRANSACTION' );
+
 	// finally update the Plan
 	( new DomainAPI() )
 		->whereDomain( $domain )
 		->update( [
 			'plan_ID' => $new_plan->getPlanID(),
 		] );
 
+	// register this event
+	APILog::insert( [
+		'family' => 'domain',
+		'action' => 'plan.change',
+		'domain' => $domain,
+		'plan'   => $new_plan,
+	] );
+
+	query( 'COMMIT' );
+
 	// POST -> REDIRECT -> GET
 	http_redirect( $domain->getDomainPlanPermalink() );
 }
 
 // spawn header
 Header::spawn( [
 	'uid'        => false,
 	'title'      => __( "Domain Plan" ),
 	'breadcrumb' => [
 		new MenuEntry( null, $domain->getDomainPermalink(), $domain->getDomainName() ),
 	],
 ] );
 
 // spawn the page content
 template( 'domain-plan-page', [
 	'domain' => $domain,
 	'plan'   => $domain,
 ] );
 
 // spawn the footer
 Footer::spawn();