diff --git a/channel-access-token.yml b/channel-access-token.yml
index f038431..c0755ec 100644
--- a/channel-access-token.yml
+++ b/channel-access-token.yml
@@ -284,7 +284,7 @@ paths:
               type: object
               properties:
                 access_token:
-                  description: "Channel access token"
+                  description: "A short-lived or long-lived channel access token."
                   type: string
               required:
                 - access_token