diff --git a/tailbone/views/auth.py b/tailbone/views/auth.py
index 51b27f14..d071ace7 100644
--- a/tailbone/views/auth.py
+++ b/tailbone/views/auth.py
@@ -135,7 +135,9 @@ class AuthenticationView(View):
         return context
 
     def authenticate_user(self, username, password):
-        return authenticate_user(Session(), username, password)
+        app = self.get_rattail_app()
+        auth = app.get_auth_handler()
+        return auth.authenticate_user(Session(), username, password)
 
     def logout(self, **kwargs):
         """