diff --git a/ldapcherry/__init__.py b/ldapcherry/__init__.py
index 765ca5b..4fea3ce 100644
--- a/ldapcherry/__init__.py
+++ b/ldapcherry/__init__.py
@@ -570,7 +570,7 @@
     def _check_session(self):
         if self.auth_mode == 'none':
             return 'anonymous'
-        username = cherrypy.session.get(SESSION_KEY)
+        return cherrypy.session.get(SESSION_KEY)
 
     def _check_auth(self, must_admin):
         """ check if a user is autheticated and, optionnaly an administrator