diff --git a/README.md b/README.md
index cc7011b..f057b1e 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,12 @@ if ($access_token != '') {
 
 ```
 
+```
+Logout SSO session :
+----
 ```$php
+use SsoRiau\SsoClientLibrary;
+
 $url_back = {return_url};
 $objSso = new SsoClientLibrary();
 $objSso->ssoLogout($url_back);