diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index ec34f1787..b11448db4 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -115,6 +115,7 @@ func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption)
 	v.SetDefault("filer.options.buckets_folder", "/buckets")
 	fs.filer.DirBucketsPath = v.GetString("filer.options.buckets_folder")
 	// TODO deprecated, will be be removed after 2020-12-31
+	// replaced by https://github.com/chrislusf/seaweedfs/wiki/Path-Specific-Configuration
 	fs.filer.FsyncBuckets = v.GetStringSlice("filer.options.buckets_fsync")
 	fs.filer.LoadConfiguration(v)