diff --git a/weed/command/filer_remote_gateway_buckets.go b/weed/command/filer_remote_gateway_buckets.go
index 974b3620e..c5fce44f8 100644
--- a/weed/command/filer_remote_gateway_buckets.go
+++ b/weed/command/filer_remote_gateway_buckets.go
@@ -9,7 +9,6 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb/remote_pb"
 	"github.com/seaweedfs/seaweedfs/weed/remote_storage"
 	"github.com/seaweedfs/seaweedfs/weed/replication/source"
-	"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
 	"github.com/seaweedfs/seaweedfs/weed/util"
 	"google.golang.org/protobuf/proto"
 	"math"
@@ -183,7 +182,7 @@ func (option *RemoteGatewayOptions) makeBucketedEventProcessor(filerSource *sour
 			if message.NewParentPath == option.bucketsDir {
 				return handleCreateBucket(message.NewEntry)
 			}
-			if strings.HasPrefix(message.NewParentPath, option.bucketsDir) && strings.Contains(message.NewParentPath, "/"+s3_constants.MultipartUploadsFolder+"/") {
+			if isMultipartUploadFile(message.NewParentPath, message.NewEntry.Name) {
 				return nil
 			}
 			if !filer.HasData(message.NewEntry) {
diff --git a/weed/command/filer_remote_sync_dir.go b/weed/command/filer_remote_sync_dir.go
index a36145fca..5a9170582 100644
--- a/weed/command/filer_remote_sync_dir.go
+++ b/weed/command/filer_remote_sync_dir.go
@@ -113,7 +113,7 @@ func makeEventProcessor(remoteStorage *remote_pb.RemoteConf, mountedDir string,
 			return nil
 		}
 		if filer_pb.IsCreate(resp) {
-			if strings.Contains(message.NewParentPath, "/"+s3_constants.MultipartUploadsFolder+"/") {
+			if isMultipartUploadFile(message.NewParentPath, message.NewEntry.Name) {
 				return nil
 			}
 			if !filer.HasData(message.NewEntry) {
@@ -165,8 +165,8 @@ func makeEventProcessor(remoteStorage *remote_pb.RemoteConf, mountedDir string,
 			glog.V(2).Infof("update: %+v", resp)
 			glog.V(0).Infof("delete %s", remote_storage.FormatLocation(oldDest))
 			if err := client.DeleteFile(oldDest); err != nil {
-				if !strings.Contains(resp.Directory, "/"+s3_constants.MultipartUploadsFolder+"/") {
-					return err
+				if isMultipartUploadFile(resp.Directory, message.OldEntry.Name) {
+					return nil
 				}
 			}
 			remoteEntry, writeErr := retriedWriteFile(client, filerSource, message.NewEntry, dest)
@@ -258,3 +258,9 @@ func updateLocalEntry(filerClient filer_pb.FilerClient, dir string, entry *filer
 		return err
 	})
 }
+
+func isMultipartUploadFile(dir string, name string) bool {
+	return strings.HasPrefix(dir, "/buckets/") &&
+		strings.Contains(dir, "/"+s3_constants.MultipartUploadsFolder+"/") &&
+		strings.HasSuffix(name, ".part")
+}