diff --git a/htdocs/ticket/class/api_tickets.class.php b/htdocs/ticket/class/api_tickets.class.php
index 2ae6662aa0b..919f04054ba 100644
--- a/htdocs/ticket/class/api_tickets.class.php
+++ b/htdocs/ticket/class/api_tickets.class.php
@@ -315,7 +315,7 @@ class Tickets extends DolibarrApi
 	}
 
 	/**
-	 * Create ticket object
+	 * Add a new message to an existing ticket identified by property ->track_id into request.
 	 *
 	 * @param array $request_data   Request datas
 	 * @return int  ID of ticket