diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index 5ecf5069915..60a56efdb46 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -272,6 +272,10 @@ class Adherent extends CommonObject
 
 	public $first_subscription_date;
 
+	public $first_subscription_date_start;
+	
+	public $first_subscription_date_end;
+
 	public $first_subscription_amount;
 
 	public $last_subscription_date;