diff --git a/htdocs/compta/cashcontrol/class/cashcontrol.class.php b/htdocs/compta/cashcontrol/class/cashcontrol.class.php
index 00d77987d08..0b7fec88bc3 100644
--- a/htdocs/compta/cashcontrol/class/cashcontrol.class.php
+++ b/htdocs/compta/cashcontrol/class/cashcontrol.class.php
@@ -86,6 +86,10 @@ class CashControl extends CommonObject
 	public $cash;
 	public $cheque;
 	public $card;
+	
+	/**
+	 * @var integer|string $date_valid
+	 */
 	public $date_valid;
 
 	/**
@@ -93,7 +97,9 @@ class CashControl extends CommonObject
      */
 	public $date_creation;
 
-
+	/**
+	 * @var integer|string $date_modification
+	 */
 	public $date_modification;
 
 	const STATUS_DRAFT = 0;