diff --git a/youtube_dl/extractor/niconico.py b/youtube_dl/extractor/niconico.py
index 45cbd4ee9..3b5784e8f 100644
--- a/youtube_dl/extractor/niconico.py
+++ b/youtube_dl/extractor/niconico.py
@@ -175,7 +175,8 @@ class NiconicoPlaylistIE(InfoExtractor):
         entries = [{
             '_type': 'url',
             'ie_key': NiconicoIE.ie_key(),
-            'url': 'http://www.nicovideo.jp/watch/%s' % entry['item_id'],
+            'url': ('http://www.nicovideo.jp/watch/%s' %
+                entry['item_data']['video_id']),
         } for entry in entries]
 
         return {