diff --git a/main.go b/main.go
index 7c4719149709d5901088347340cae37d3858eb9b..f498a4743ce38df6f42b0ee633f30743398f5b7f 100644
--- a/main.go
+++ b/main.go
@@ -13,7 +13,7 @@ import (
 )
 
 const (
-	namespace = "cephfs-foldersize"
+	namespace = "cephfs_foldersize"
 )
 
 var (