diff --git a/home.markdown b/home.markdown
index 9125950..5786124 100644
--- a/home.markdown
+++ b/home.markdown
@@ -31,7 +31,7 @@ $ create-mysql-user-and-database foo # create database and user `foo`
 ## List zfs snapshots
 
 ```bash
-$ cd /data/containers/<name>/rootfs/.zfs
+$ cd /data/containers/<name>/rootfs/.zfs # .zfs directory is hidden and will not be shown by `ls -a`
 $ ls
 ```