diff --git a/src/Client/Model/ModelsCreateEvent.php b/src/Client/Model/ModelsCreateEvent.php
index 815b79a..af336d6 100644
--- a/src/Client/Model/ModelsCreateEvent.php
+++ b/src/Client/Model/ModelsCreateEvent.php
@@ -433,7 +433,7 @@ public function getEndpointId()
     /**
      * Sets endpoint_id
      *
-     * @param string|null $endpoint_id Specifies the endpoint to send this event to.
+     * @param string|null $endpoint_id Specifies the endpoint to send this event to. Required unless the deprecated app_id is provided.
      *
      * @return self
      */