diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index 2d585fe2466..9584c53ca5b 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -529,12 +529,14 @@ class Home(http.Controller):
     def index(self, s_action=None, db=None, debug=False, **kw):
         debug = debug != False
 
-        lst = http.db_list(True)
+        try:
+            lst = http.db_list()
+        except openerp.exceptions.AccessDenied:
+            lst = []
+
         if db not in lst:
             db = None
         guessed_db = http.db_monodb(request.httprequest)
-        if guessed_db is None and len(lst) > 0:
-            guessed_db = lst[0]
 
         def redirect(db):
             query = dict(urlparse.parse_qsl(request.httprequest.query_string, keep_blank_values=True))
@@ -542,8 +544,11 @@ class Home(http.Controller):
             redirect = request.httprequest.path + '?' + urllib.urlencode(query)
             return redirect_with_hash(redirect)
 
-        if db is None and guessed_db is not None:
-            return redirect(guessed_db)
+        if guessed_db is None and db is None and lst:
+            return redirect(lst[0])
+
+        if guessed_db is None and lst:
+            guessed_db = lst[0]
 
         if db is not None and db != guessed_db:
             request.session.logout()