diff --git a/holder.go b/holder.go
index 7649caeba..d0a242ca5 100644
--- a/holder.go
+++ b/holder.go
@@ -524,7 +524,7 @@ func (h *Holder) setFileLimit() {
 }
 
 func (h *Holder) loadNodeID() (string, error) {
-	idPath := path.Join(h.Path, "ID")
+	idPath := path.Join(h.Path, ".id")
 	nodeID := ""
 	h.Logger.Printf("load NodeID: %s", idPath)
 	if err := os.MkdirAll(h.Path, 0777); err != nil {