diff --git a/IPython/html/tree/handlers.py b/IPython/html/tree/handlers.py
index 61d1417..376575d 100644
--- a/IPython/html/tree/handlers.py
+++ b/IPython/html/tree/handlers.py
@@ -80,5 +80,5 @@ default_handlers = [
     (r"/tree%s" % notebook_path_regex, TreeHandler),
     (r"/tree%s" % path_regex, TreeHandler),
     (r"/tree", TreeHandler),
-    (r"", TreeRedirectHandler),
+    (r"/?", TreeRedirectHandler),
     ]