diff --git a/src/js/app.js b/src/js/app.js
index d19c6375..01b57a1e 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -547,6 +547,7 @@ var app = Sammy('#main', function (sam) {
 
             $('.logout-button').fadeIn();
             c.flash('success', y18n.t('logged_in'));
+            c.flash('warning', y18n.t('old_2_2_upgrade_link'));
             if (store.get('path')) {
                 c.redirect(store.get('path'));
             } else {
diff --git a/src/locales/en.json b/src/locales/en.json
index 69acbf95..2808d27c 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -49,6 +49,7 @@
     "passwords_too_short" : "Password is too short",
     "password_empty" : "Password field is empty",
     "logged_in" : "Logged in",
+    "old_2_2_upgrade_link" : "<b>Warning</b>: you are using the old version 2.2 of YunoHost, you should upgrade to 2.4 <a target='_blank' href='https://forum.yunohost.org/t/yunohost-2-4-released/1544'>by following those instructions</a>",
     "logged_out" : "Logged out",
     "unauthorized" : "Unauthorized",
     "error_occured" : "An error occured, try again",
diff --git a/src/locales/fr.json b/src/locales/fr.json
index 0b5c0836..ef7ed541 100644
--- a/src/locales/fr.json
+++ b/src/locales/fr.json
@@ -1,4 +1,5 @@
 {
+    "old_2_2_upgrade_link" : "<b>Attention</b>: vous utilisez l'ancienne version 2.2 de YunoHost, vous devriez la mettre à jours vers la version 2.4 <a target='_blank' href='https://forum.yunohost.org/t/yunohost-2-4-released/1544'>en suivant ces instructions</a>",
     "domain": "Domaine",
     "domains": "Domaines",
     "password": "Mot de passe",