diff --git a/weed/command/filer_remote_sync_dir.go b/weed/command/filer_remote_sync_dir.go
index 00f6d7493..dd3e94be6 100644
--- a/weed/command/filer_remote_sync_dir.go
+++ b/weed/command/filer_remote_sync_dir.go
@@ -278,7 +278,10 @@ func updateLocalEntry(filerClient filer_pb.FilerClient, dir string, entry *filer
 }
 
 func isMultipartUploadFile(dir string, name string) bool {
-	return strings.HasPrefix(dir, "/buckets/") &&
-		strings.Contains(dir, "/"+s3_constants.MultipartUploadsFolder+"/") &&
-		strings.HasSuffix(name, ".part")
+	return isMultipartUploadDir(dir) &&	strings.HasSuffix(name, ".part")
+}
+
+func isMultipartUploadDir(dir string) bool {
+	return strings.HasPrefix(dir, "/buckets/") &&
+		strings.Contains(dir, "/"+s3_constants.MultipartUploadsFolder+"/")
 }
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index 20464fa50..dc954e805 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -11,6 +11,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/replication/sink"
 	"github.com/seaweedfs/seaweedfs/weed/replication/sink/filersink"
 	"github.com/seaweedfs/seaweedfs/weed/replication/source"
+	"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
 	"github.com/seaweedfs/seaweedfs/weed/security"
 	statsCollect "github.com/seaweedfs/seaweedfs/weed/stats"
 	"github.com/seaweedfs/seaweedfs/weed/util"
@@ -394,6 +395,10 @@ func genProcessFunction(sourcePath string, targetPath string, excludePaths []str
 			glog.V(0).Infof("received %v", resp)
 		}
 
+		if isMultipartUploadDir(resp.Directory) {
+			return nil
+		}
+
 		if !strings.HasPrefix(resp.Directory, sourcePath) {
 			return nil
 		}