diff --git a/clients/line-channel-access-token-client/src/main/java/com/linecorp/bot/oauth/client/ChannelAccessTokenClient.java b/clients/line-channel-access-token-client/src/main/java/com/linecorp/bot/oauth/client/ChannelAccessTokenClient.java
index 6d952576e..34c1d92d9 100644
--- a/clients/line-channel-access-token-client/src/main/java/com/linecorp/bot/oauth/client/ChannelAccessTokenClient.java
+++ b/clients/line-channel-access-token-client/src/main/java/com/linecorp/bot/oauth/client/ChannelAccessTokenClient.java
@@ -117,7 +117,7 @@ CompletableFuture<Result<IssueStatelessChannelAccessTokenResponse>> issueStatele
   /**
    * Revoke short-lived or long-lived channel access token
    *
-   * @param accessToken Channel access token (required)
+   * @param accessToken A short-lived or long-lived channel access token. (required)
    * @see <a
    *     href="https://developers.line.biz/en/reference/messaging-api/#revoke-longlived-or-shortlived-channel-access-token">
    *     Documentation</a>