diff --git a/README.md b/README.md
index de14f1e..4eb9c11 100644
--- a/README.md
+++ b/README.md
@@ -160,10 +160,8 @@ following commands as root:
 ```
 lo=$(losetup -f)
 losetup -f secret.tomb
-pass="$(gpg -d secret.key)"
-echo -n -e "$pass" | cryptsetup --key-file - luksOpen $lo secret
+gpg -d secret.key | head -c -1 | cryptsetup --key-file - luksOpen $lo secret
 mount /dev/mapper/secret /mnt
-unset pass
 ```
 One can change the last argument `/mnt` to where the Tomb has to be
 mounted and made accessible. To close the tomb then use: