diff --git a/htdocs/livraison/class/livraison.class.php b/htdocs/livraison/class/livraison.class.php
index c962d1d352e..ec556c82759 100644
--- a/htdocs/livraison/class/livraison.class.php
+++ b/htdocs/livraison/class/livraison.class.php
@@ -62,15 +62,23 @@ class Livraison extends CommonObject
 	public $brouillon;
 	public $socid;
 	public $ref_customer;
-
-	public $date_delivery;    // Date really received
+    
+	/**
+	 * @var integer|string Date really received
+	 */
+	public $date_delivery; 
 
 	/**
-   * @var integer|string date_creation
-   */
+     * @var integer|string date_creation
+     */
 	public $date_creation;
-
+    
+	/**
+	 * @var integer|string date_valid
+	 */
 	public $date_valid;
+	
+	
 	public $model_pdf;
 
 
diff --git a/htdocs/loan/class/loan.class.php b/htdocs/loan/class/loan.class.php
index 66fdfbc25a2..a453732a5d2 100644
--- a/htdocs/loan/class/loan.class.php
+++ b/htdocs/loan/class/loan.class.php
@@ -72,8 +72,14 @@ class Loan extends CommonObject
      */
 	public $date_creation;
 
-
+	/**
+	 * @var integer|string date_modification
+	 */
 	public $date_modification;
+	
+	/**
+	 * @var integer|string date_validation
+	 */
 	public $date_validation;
 
 	public $insurance_amount;