diff --git a/internal/services/object.go b/internal/services/object.go
index 9f65783..e571da9 100644
--- a/internal/services/object.go
+++ b/internal/services/object.go
@@ -65,7 +65,7 @@ func (svc *ObjectService) DownloadObject(userID int64, objectID int64) (io.ReadC
 	switch preDownloadResp.Redundancy {
 	case consts.REDUNDANCY_REP:
 		var repInfo ramsg.RespObjectRepInfo
-		err := serder.MapToObject(preDownloadResp.RedundancyData.(map[string]any), &repInfo)
+		err := serder.AnyToAny(preDownloadResp.RedundancyData, &repInfo)
 		if err != nil {
 			mutex.Unlock()
 			return nil, fmt.Errorf("redundancy data to rep info failed, err: %w", err)