diff --git a/lib/flashscraper.py b/lib/flashscraper.py
index 323dbe4..d203b78 100644
--- a/lib/flashscraper.py
+++ b/lib/flashscraper.py
@@ -134,9 +134,7 @@ def _youtube_callback_step2(info, video_id, callback):
         # strip url= from url=xxxxxx, strip trailer.  Strip duplicate params.
         for fmt, stream_map_data in zip(fmt_list, stream_map):
             stream_map = cgi.parse_qs(stream_map_data)
-            url_base = stream_map['url'][0]
-            sig_part = '&signature=' + stream_map['sig'][0]
-            fmt_url_map[fmt] = url_base + sig_part
+            fmt_url_map[fmt] = stream_map['url'][0]
 
         title = params.get("title", ["No title"])[0]
         try: