diff --git a/src/v4/aliyun_util.rs b/src/v4/aliyun_util.rs
index 08daf4a..b01c772 100644
--- a/src/v4/aliyun_util.rs
+++ b/src/v4/aliyun_util.rs
@@ -80,7 +80,7 @@ fn add_common_headers(header: &mut BTreeMap<String, String>, request: &Request)
             &request.method,
             &query,
             header,
-            "payload", // TODO payload
+            &digest_request_payload,
         );
         header.insert_kv(HEADER_AUTHORIZATION, authorization);
     }