diff --git a/htdocs/compta/cashcontrol/class/cashcontrol.class.php b/htdocs/compta/cashcontrol/class/cashcontrol.class.php
index 354b50365ca..b80128f6570 100644
--- a/htdocs/compta/cashcontrol/class/cashcontrol.class.php
+++ b/htdocs/compta/cashcontrol/class/cashcontrol.class.php
@@ -87,7 +87,14 @@ class CashControl extends CommonObject
 	public $cheque;
 	public $card;
 	public $date_valid;
+	
+	/**
+	 * Creation date
+	 * @var int
+	 */
 	public $date_creation;
+	
+	
 	public $date_modification;
 
 	const STATUS_DRAFT = 0;
diff --git a/htdocs/compta/sociales/class/chargesociales.class.php b/htdocs/compta/sociales/class/chargesociales.class.php
index bbffbebe0c9..cc6c94ee4ad 100644
--- a/htdocs/compta/sociales/class/chargesociales.class.php
+++ b/htdocs/compta/sociales/class/chargesociales.class.php
@@ -61,7 +61,14 @@ class ChargeSociales extends CommonObject
     public $amount;
     public $paye;
     public $periode;
+    
+    /**
+     * Creation date
+     * @var int
+     */
     public $date_creation;
+    
+    
     public $date_modification;
     public $date_validation;
 
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 7707be211f3..a1f42da03eb 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -421,7 +421,12 @@ abstract class CommonObject
 	public $civility_id;
 
 	// Dates
-	public $date_creation;			// Date creation
+	/**
+	 * @var int		Date of creation
+	 */
+	public $date_creation;
+	
+	
 	public $date_validation;		// Date validation
 	public $date_modification;		// Date last change (tms field)
 
diff --git a/htdocs/core/class/emailsenderprofile.class.php b/htdocs/core/class/emailsenderprofile.class.php
index 155050c6997..3406eefa3cd 100644
--- a/htdocs/core/class/emailsenderprofile.class.php
+++ b/htdocs/core/class/emailsenderprofile.class.php
@@ -105,7 +105,13 @@ class EmailSenderProfile extends CommonObject
     public $label;
 
 	public $email;
+	
+	/**
+	 * @var int		Date of creation
+	 */
 	public $date_creation;
+	
+	
 	public $tms;
 	//public $fk_user_creat;
 	//public $fk_user_modif;