diff --git a/doc/design/file_mananger/pfs/mv.md b/doc/design/file_mananger/pfs/mv.md
index 7f7ef209c823e2febda30786c26b4f40468b0106..8ea006bdaf56cdcad5d808acb34b4fcef42f5263 100644
--- a/doc/design/file_mananger/pfs/mv.md
+++ b/doc/design/file_mananger/pfs/mv.md
@@ -1,5 +1,5 @@
 # Name  
-mv - move (rename) files or directories
+mv - move (rename) files or directories
 
 
 # Synopsis