diff --git a/openerp/http.py b/openerp/http.py
index d70e5358ed9..c63a795b6a7 100644
--- a/openerp/http.py
+++ b/openerp/http.py
@@ -1224,10 +1224,11 @@ class Root(object):
                     try:
                         with openerp.tools.mute_logger('openerp.sql_db'):
                             ir_http = request.registry['ir.http']
-                    except psycopg2.OperationalError:
-                        # psycopg2 error. At this point, that means the
-                        # database probably does not exists anymore. Log the
-                        # user out and fall back to nodb
+                    except (AttributeError, psycopg2.OperationalError):
+                        # psycopg2 error or attribute error while constructing
+                        # the registry. That means the database probably does
+                        # not exists anymore or the code doesnt match the db.
+                        # Log the user out and fall back to nodb
                         request.session.logout()
                         result = _dispatch_nodb()
                     else: