diff --git a/ssh/yubibug.md b/ssh/yubibug.md
index 9e29093..ba75120 100644
--- a/ssh/yubibug.md
+++ b/ssh/yubibug.md
@@ -11,8 +11,8 @@ Let's try it. For this demo, I'll let the Yubikey generate GnuPG's keys. This is
 
 Let's make things clear :
 
-    rm -R .gnupg
-    rm -R .ssh
+    $ rm -R .gnupg
+    * rm -R .ssh
     $ ykman openpgp reset
     WARNING! This will delete all stored OpenPGP keys and data and restore factory settings? [y/N]: y
     Resetting OpenPGP data, don't remove your YubiKey...
@@ -160,17 +160,15 @@ Good, let's start with key generation :
     sub   ed25519 2020-10-05 [A]
     sub   cv25519 2020-10-05 [E]
 
+    $ ssh-add -L
+    ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGzO7860chQPMw0NuLDhBqZd1IcfIqBnvy4GSbzZd4vu cardno:000615280015
 
-
-      $ ssh-add -L
-            ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGzO7860chQPMw0NuLDhBqZd1IcfIqBnvy4GSbzZd4vu cardno:000615280015
-
-        $ mkdir sshca
-        $ ssh-keygen -t ed25519 -N '' -C 'Test CA' -f sshca/ca
-        $ cat sshca/ca.pub
-        ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICAL7l1sQuKe4daLfKGZuiRPZZXquokQyH+p6utlZxZ+ Test CA
-        $ ssh-add -L > sshca/id_ed25519.pub
-        $ ssh-keygen -s sshca/ca -I test-dummy sshca/id_ed25519.pub
+    $ mkdir sshca
+    $ ssh-keygen -t ed25519 -N '' -C 'Test CA' -f sshca/ca
+    $ cat sshca/ca.pub
+    ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICAL7l1sQuKe4daLfKGZuiRPZZXquokQyH+p6utlZxZ+ Test CA
+    $ ssh-add -L > sshca/id_ed25519.pub
+    $ ssh-keygen -s sshca/ca -I test-dummy sshca/id_ed25519.pub
     Signed user key sshca/id_ed25519-cert.pub: id "test-dummy" serial 0 valid forever
     $ mkdir ~/.ssh
     $ cp sshca/id_ed25519-cert.pub ~/.ssh/
@@ -201,15 +199,15 @@ Note the line beginning with cert-authority which is not common. For reference,
 
 Now, try to login :
 
-        $ ssh root@server
-        sign_and_send_pubkey: signing failed for ED25519 "cardno:000615280015": agent refused operation
+    $ ssh root@server
+    sign_and_send_pubkey: signing failed for ED25519 "cardno:000615280015": agent refused operation
     Password:
 
 So we're completely out of luck : authentication doesn't works.
 
 For comparison, let's try with an NIST P384 key :
 
-        $ ykman openpgp reset
+    $ ykman openpgp reset
     WARNING! This will delete all stored OpenPGP keys and data and restore factory settings? [y/N]: y
     Resetting OpenPGP data, don't remove your YubiKey...
     Success! All data has been cleared and default PINs are set.
@@ -378,4 +376,4 @@ For comparison, let's try with an NIST P384 key :
     Welcome to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-47-generic x86_64)
     root@server:~#
 
-**Authentication is working as expected here !** 
+**Authentication is working as expected here !**