diff --git a/websocket/__init__.py b/websocket/__init__.py
index 9b2cef5..644bb75 100644
--- a/websocket/__init__.py
+++ b/websocket/__init__.py
@@ -19,6 +19,7 @@ Copyright (C) 2010 Hiroki Ohtani(liris)
     Boston, MA  02110-1335  USA
 
 """
+from ._abnf import *
 from ._app import WebSocketApp
 from ._core import *
 from ._exceptions import *