diff --git a/HowtoCheckconf.md b/HowtoCheckconf.md
index 114a4a1e..65fe4a9d 100644
--- a/HowtoCheckconf.md
+++ b/HowtoCheckconf.md
@@ -31,10 +31,18 @@ Syntax check complete.
 
 ## OpenSSH
 
+Pour valider la configuration du serveur SSH :
+
 ~~~
 # sshd -T -f /etc/ssh/sshd_config
 ~~~
 
+Pour valider une clé publique :
+
+~~~
+# ssh-keygen -l -f .ssh/id_rsa.pub
+~~~
+
 # Mail
 
 ## OpenSMTPD