diff --git a/htdocs/core/class/notify.class.php b/htdocs/core/class/notify.class.php
index 439e9b60d3c..d52166659ea 100644
--- a/htdocs/core/class/notify.class.php
+++ b/htdocs/core/class/notify.class.php
@@ -2,6 +2,7 @@
 /* Copyright (C) 2003-2005 Rodolphe Quiedeville <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2011 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2014	   Juanjo Menent		<jmenent@2byte.es>
+ * Copyright (C) 2018 	   Philippe Grand		<philippe.grand@atoo-net.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -51,16 +52,15 @@ class Notify
 	public $errors = array();
 
 	var $author;
-
-	/**
-	 * @var string Ref
-	 */
-	public $ref;
-
+	var $ref;
 	var $date;
 	var $duree;
 	var $note;
-	var $fk_project;
+
+	/**
+     * @var int Project ID
+     */
+    public $fk_project;
 
 	// Les codes actions sont definis dans la table llx_notify_def
 
@@ -369,6 +369,14 @@ class Notify
 		if ($result)
 		{
 			$num = $this->db->num_rows($result);
+			$projtitle='';
+			if (! empty($object->fk_project))
+			{
+				require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
+				$proj = new Project($this->db);
+				$proj->fetch($object->fk_project);
+				$projtitle='('.$proj->title.')';
+			}
 
 			if ($num > 0)
 			{
@@ -390,7 +398,7 @@ class Notify
 							$outputlangs->setDefaultLang($obj->default_lang);
 						}
 
-						$subject = '['.$mysoc->name.'] '.$outputlangs->transnoentitiesnoconv("DolibarrNotification");
+						$subject = '['.$mysoc->name.'] '.$outputlangs->transnoentitiesnoconv("DolibarrNotification").($projtitle?' '.$projtitle:'');
 
 						switch ($notifcode) {
 							case 'BILL_VALIDATE':
@@ -572,7 +580,7 @@ class Notify
 				$link = '';
 				$num++;
 
-				$subject = '['.$mysoc->name.'] '.$langs->transnoentitiesnoconv("DolibarrNotification");
+				$subject = '['.$mysoc->name.'] '.$langs->transnoentitiesnoconv("DolibarrNotification").($projtitle?' '.$projtitle:'');
 
 				switch ($notifcode) {
 					case 'BILL_VALIDATE':
@@ -734,5 +742,6 @@ class Notify
 		if (! $error) return $num;
 		else return -1 * $error;
 	}
+
 }