diff --git a/weed/filer2/filechunk_manifest.go b/weed/filer2/filechunk_manifest.go
index bab73c24a..e7b4df1fe 100644
--- a/weed/filer2/filechunk_manifest.go
+++ b/weed/filer2/filechunk_manifest.go
@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	ManifestBatch = 10000
+	ManifestBatch = 1000
 )
 
 func HasChunkManifest(chunks []*filer_pb.FileChunk) bool {