diff --git a/source/app/controllers/main.py b/source/app/controllers/main.py
index d702b42..927a1db 100644
--- a/source/app/controllers/main.py
+++ b/source/app/controllers/main.py
@@ -96,6 +96,11 @@ class AppValues(object):
     def on_get(self, req, resp, table):
         values = req.params
         session = req.env['beaker.session']
+        if not 'userobj' in session:
+            session.delete()
+            resp.status = falcon.HTTP_200
+            raise falcon.HTTPTemporaryRedirect('/')
+
         if table == 'admin':
             req.context['result'] = session['userobj'].es_superusuario \
                 or session['userobj'].es_admin