diff --git a/stream.py b/stream.py
index 19f6d76..99690fa 100755
--- a/stream.py
+++ b/stream.py
@@ -202,6 +202,7 @@ class MainHandler(tornado.web.RequestHandler):
                 self.write("Stream not found.")
         else:
             ctype = upstream_type(upstream, proxy)
+            data = None
             if "mpgurl" in ctype:
                 data = rewrite(upstream, provider, proxy)
             else: