diff --git a/youtube_dl/extractor/ustream.py b/youtube_dl/extractor/ustream.py
index 888f39f7a4..a29d67e9fa 100644
--- a/youtube_dl/extractor/ustream.py
+++ b/youtube_dl/extractor/ustream.py
@@ -69,7 +69,7 @@ class UstreamIE(InfoExtractor):
         filesize = float_or_none(video.get('file_size'))
 
         formats = [{
-            'id': format_id,
+            'id': video_id,
             'url': video_url,
             'ext': format_id,
             'filesize': filesize,