diff --git a/README.md b/README.md
index 25bd76d..43243d8 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ ______________________________________________________________
 optional arguments:
   -h, --help            show this help message and exit
   -d REPAIR_DIRECTORY, --dir REPAIR_DIRECTORY
-                        give path of music files' directory
+                        give path of music files\' directory
   -s SONG_NAME, --song SONG_NAME
                         Only fix metadata of the file specified
   -c, --config          Add API Keys to config