diff --git a/youtube_dl/extractor/niconico.py b/youtube_dl/extractor/niconico.py
index d98131271..c0c139b5d 100644
--- a/youtube_dl/extractor/niconico.py
+++ b/youtube_dl/extractor/niconico.py
@@ -8,7 +8,6 @@ from ..utils import (
     compat_urllib_parse,
     compat_urllib_request,
     compat_urlparse,
-    ExtractorError,
     unified_strdate,
     parse_duration,
     int_or_none,