diff --git a/sources/SessionTracker/iSessionHandlerExtension.php b/sources/SessionTracker/iSessionHandlerExtension.php
index 9969fb7e2..17cd31776 100644
--- a/sources/SessionTracker/iSessionHandlerExtension.php
+++ b/sources/SessionTracker/iSessionHandlerExtension.php
@@ -3,8 +3,11 @@
 namespace Combodo\iTop\SessionTracker;
 
 	/**
-     * Experimental, for internal use only, subject to change without notice.
+	 * @experimental for internal use only, subject to change without notice.
+	 *
 	 * Do not use this interface in your code.
+	 *
+	 * @since 3.2.2
 	 */
 interface iSessionHandlerExtension {
 	public function __construct();