diff --git a/yt_dlp/extractor/niconico.py b/yt_dlp/extractor/niconico.py
index 294dcb651..f6326bef7 100644
--- a/yt_dlp/extractor/niconico.py
+++ b/yt_dlp/extractor/niconico.py
@@ -30,7 +30,11 @@
     urlencode_postdata,
     urljoin,
 )
-from ..utils.traversal import find_element, require, traverse_obj
+from ..utils.traversal import (
+    find_element,
+    require,
+    traverse_obj,
+)
 
 
 class NiconicoBaseIE(InfoExtractor):