diff --git a/mandaye/dispatcher.py b/mandaye/dispatcher.py
index 7208ef2..5c7e091 100644
--- a/mandaye/dispatcher.py
+++ b/mandaye/dispatcher.py
@@ -50,6 +50,7 @@ class Dispatcher(object):
         module = import_module(module)
         Auth = getattr(module, attr)
         self.auth = Auth(env, self.mapper)
+        self.env['mandaye.auth'] = self.auth
         mapping = []
         mapping.extend(self.auth.get_default_mapping())
         mapping.extend(default.mapping)