diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 8003b8d95cc..0709c07a252 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -1,11 +1,9 @@
 <?php
 /* Copyright (C) 2006-2015 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2013 Regis Houssin        <regis.houssin@capnetworks.com>
- * Copyright (C) 2010-2013 Juanjo Menent        <jmenent@2byte.es>
- * Copyright (C) 2012      Christophe Battarel  <christophe.battarel@altairis.fr>
  * Copyright (C) 2010-2015 Juanjo Menent        <jmenent@2byte.es>
  * Copyright (C) 2012-2013 Christophe Battarel  <christophe.battarel@altairis.fr>
- * Copyright (C) 2011-2018 Philippe Grand	    <philippe.grand@atoo-net.com>
+ * Copyright (C) 2011-2018 Philippe Grand       <philippe.grand@atoo-net.com>
  * Copyright (C) 2012-2015 Marcos García        <marcosgdf@gmail.com>
  * Copyright (C) 2012-2015 Raphaël Doursenaud   <rdoursenaud@gpcsolutions.fr>
  * Copyright (C) 2012      Cedric Salvador      <csalvador@gpcsolutions.fr>
@@ -13,8 +11,9 @@
  * Copyright (C) 2016      Bahfir abbes         <dolipar@dolipar.org>
  * Copyright (C) 2017      ATM Consulting       <support@atm-consulting.fr>
  * Copyright (C) 2017      Nicolas ZABOURI      <info@inovea-conseil.com>
- * Copyright (C) 2017      Rui Strecht		    <rui.strecht@aliartalentos.com>
+ * Copyright (C) 2017      Rui Strecht          <rui.strecht@aliartalentos.com>
  * Copyright (C) 2018      Frederic France      <frederic.france@netlogic.fr>
+ * Copyright (C) 2018      Josep Lluís Amador   <joseplluis@lliuretic.cat>
  *
  * 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
@@ -6144,6 +6143,9 @@ abstract class CommonObject
 			$e = 0;
 			foreach($extrafields->attributes[$this->table_element]['label'] as $key=>$label)
 			{
+				//Show only the key field in params
+				if (is_array($params) && array_key_exists('onlykey',$params) && $key != $params['onlykey']) continue;
+				
 				$enabled = 1;
 				if ($enabled && isset($extrafields->attributes[$this->table_element]['list'][$key]))
 				{