diff --git a/htdocs/comm/mailing/class/advtargetemailing.class.php b/htdocs/comm/mailing/class/advtargetemailing.class.php
index e6111038742..b36e0463b9e 100644
--- a/htdocs/comm/mailing/class/advtargetemailing.class.php
+++ b/htdocs/comm/mailing/class/advtargetemailing.class.php
@@ -43,7 +43,11 @@ class AdvanceTargetingMailing extends CommonObject
 	 */
 	public $errors = array();
 	
-	var $element='advtargetemailing';			//!< Id that identify managed objects
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element='advtargetemailing';
+	
 	var $table_element='advtargetemailing';	//!< Name of table without prefix where object is stored
 
 	/**
diff --git a/htdocs/compta/bank/class/account.class.php b/htdocs/compta/bank/class/account.class.php
index 28eb0a94443..a62592aaf2e 100644
--- a/htdocs/compta/bank/class/account.class.php
+++ b/htdocs/compta/bank/class/account.class.php
@@ -1643,7 +1643,11 @@ class AccountLine extends CommonObject
      */
     public $db;
     
-	var $element='bank';
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element='bank';
+	
 	var $table_element='bank';
 	var $picto = 'generic';
 
diff --git a/htdocs/expedition/class/expeditionbatch.class.php b/htdocs/expedition/class/expeditionbatch.class.php
index d94baee2a43..540b584590b 100644
--- a/htdocs/expedition/class/expeditionbatch.class.php
+++ b/htdocs/expedition/class/expeditionbatch.class.php
@@ -28,7 +28,11 @@
  */
 class ExpeditionLineBatch extends CommonObject
 {
-	var $element='expeditionlignebatch';			//!< Id that identify managed objects
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element='expeditionlignebatch';			
+	
 	private static $_table_element='expeditiondet_batch';		//!< Name of table without prefix where object is stored
 
 	var $sellby;
diff --git a/htdocs/expensereport/class/expensereport.class.php b/htdocs/expensereport/class/expensereport.class.php
index 821590365d8..5e9d11c9c86 100644
--- a/htdocs/expensereport/class/expensereport.class.php
+++ b/htdocs/expensereport/class/expensereport.class.php
@@ -33,7 +33,11 @@ require_once DOL_DOCUMENT_ROOT .'/expensereport/class/expensereport_rule.class.p
  */
 class ExpenseReport extends CommonObject
 {
-    var $element='expensereport';
+    /**
+	 * @var string ID to identify managed object
+	 */
+	public $element='expensereport';
+	
     var $table_element='expensereport';
     var $table_element_line = 'expensereport_det';
     var $fk_element = 'fk_expensereport';
diff --git a/htdocs/product/class/productbatch.class.php b/htdocs/product/class/productbatch.class.php
index b52514a4195..4533013d6b6 100644
--- a/htdocs/product/class/productbatch.class.php
+++ b/htdocs/product/class/productbatch.class.php
@@ -30,7 +30,11 @@ require_once DOL_DOCUMENT_ROOT."/core/class/commonobject.class.php";
  */
 class Productbatch extends CommonObject
 {
-	var $element='productbatch';			//!< Id that identify managed objects
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element='productbatch';		
+	
 	private static $_table_element='product_batch';		//!< Name of table without prefix where object is stored
 
 	var $tms='';
diff --git a/htdocs/product/class/productcustomerprice.class.php b/htdocs/product/class/productcustomerprice.class.php
index 37c945e3e62..3c281ee88b7 100644
--- a/htdocs/product/class/productcustomerprice.class.php
+++ b/htdocs/product/class/productcustomerprice.class.php
@@ -28,7 +28,11 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/commonobject.class.php';
  */
 class Productcustomerprice extends CommonObject
 {
-	var $element = 'product_customer_price'; // !< Id that identify managed objects
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element = 'product_customer_price'; 
+	
 	var $table_element = 'product_customer_price'; // !< Name of table without prefix where object is stored
 	var $entity;
 	var $datec = '';
diff --git a/htdocs/product/class/propalmergepdfproduct.class.php b/htdocs/product/class/propalmergepdfproduct.class.php
index d69efd3b14d..2894cfff60b 100644
--- a/htdocs/product/class/propalmergepdfproduct.class.php
+++ b/htdocs/product/class/propalmergepdfproduct.class.php
@@ -31,7 +31,11 @@ require_once DOL_DOCUMENT_ROOT."/core/class/commonobject.class.php";
  */
 class Propalmergepdfproduct extends CommonObject
 {
-	var $element='propal_merge_pdf_product';			//!< Id that identify managed objects
+	/**
+	 * @var string ID to identify managed object
+	 */
+	public $element='propal_merge_pdf_product';			
+	
 	var $table_element='propal_merge_pdf_product';		//!< Name of table without prefix where object is stored
 
 	var $fk_product;