diff --git a/openerp/addons/base/ir/ir_http.py b/openerp/addons/base/ir/ir_http.py
index 64e6636224e..8c4f8bed82b 100644
--- a/openerp/addons/base/ir/ir_http.py
+++ b/openerp/addons/base/ir/ir_http.py
@@ -87,7 +87,7 @@ class ir_http(osv.AbstractModel):
                     # let them bubble up
                     request.session.logout(keep_db=True)
             getattr(self, "_auth_method_%s" % auth_method)()
-        except (openerp.exceptions.AccessDenied, openerp.http.SessionExpiredException):
+        except (openerp.exceptions.AccessDenied, openerp.http.SessionExpiredException, werkzeug.exceptions.HTTPException):
             raise
         except Exception:
             _logger.exception("Exception during request Authentication.")