diff --git a/htdocs/categories/class/categorie.class.php b/htdocs/categories/class/categorie.class.php
index 05c13d1abe3..7e01098a5f8 100644
--- a/htdocs/categories/class/categorie.class.php
+++ b/htdocs/categories/class/categorie.class.php
@@ -5,7 +5,7 @@
  * Copyright (C) 2006-2012  Regis Houssin           <regis.houssin@capnetworks.com>
  * Copyright (C) 2006-2012  Laurent Destailleur     <eldy@users.sourceforge.net>
  * Copyright (C) 2007       Patrick Raguin          <patrick.raguin@gmail.com>
- * Copyright (C) 2013       Juanjo Menent           <jmenent@2byte.es>
+ * Copyright (C) 2013-2016  Juanjo Menent           <jmenent@2byte.es>
  * Copyright (C) 2013       Philippe Grand          <philippe.grand@atoo-net.com>
  * Copyright (C) 2015       Marcos García           <marcosgdf@gmail.com>
  * Copyright (C) 2015       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
@@ -602,17 +602,19 @@ class Categorie extends CommonObject
 				{
 					if ($this->db->num_rows($resql) > 0)
 					{
-						$objparent = $this->db->fetch_object($resql);
+                        $objparent = $this->db->fetch_object($resql);
 
 						if (!empty($objparent->fk_parent))
 						{
 							$cat = new Categorie($this->db);
-							$cat->id=$objparent->fk_parent;
-							$result=$cat->add_type($obj, $type);
-							if ($result < 0)
-							{
-								$this->error=$cat->error;
-								$error++;
+							$cat->id = $objparent->fk_parent;
+							if (!$cat->containsObject($type, $obj->id)) {
+								$result = $cat->add_type($obj, $type);
+								if ($result < 0)
+								{
+									$this->error = $cat->error;
+									$error++;
+								}
 							}
 						}
 					}
diff --git a/htdocs/core/boxes/box_project.php b/htdocs/core/boxes/box_project.php
index 7d819ec0d2b..1db7b5729db 100644
--- a/htdocs/core/boxes/box_project.php
+++ b/htdocs/core/boxes/box_project.php
@@ -2,6 +2,7 @@
 /* Copyright (C) 2012-2014 Charles-François BENKE <charles.fr@benke.fr>
  * Copyright (C) 2014      Marcos García          <marcosgdf@gmail.com>
  * Copyright (C) 2015      Frederic France        <frederic.france@free.fr>
+ * Copyright (C) 2016      Juan José Menent       <jmenent@2byte.es>
  *
  * 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
@@ -79,8 +80,10 @@ class box_project extends ModeleBoxes
 
 			$sql = "SELECT p.rowid, p.ref, p.title, p.fk_statut ";
 			$sql.= " FROM ".MAIN_DB_PREFIX."projet as p";
+            if($user->socid) $sql.= " INNER JOIN ".MAIN_DB_PREFIX."societe as s ON s.rowid=p.fk_soc";
 			$sql.= " WHERE p.entity = ".$conf->entity;
-			$sql.= " AND p.fk_statut = 1"; // Seulement les projets ouverts
+            if($user->socid) $sql.= " AND s.rowid = ".$user->socid;
+            $sql.= " AND p.fk_statut = 1"; // Seulement les projets ouverts
 			$sql.= " ORDER BY p.datec DESC";
 			$sql.= $db->plimit($max, 0);