diff --git a/yt_dlp/downloader/niconico.py b/yt_dlp/downloader/niconico.py
index e8b0d53423..62bed646f3 100644
--- a/yt_dlp/downloader/niconico.py
+++ b/yt_dlp/downloader/niconico.py
@@ -190,7 +190,7 @@ def real_download(self, filename, info_dict):
                     total_duration = int(float(line.split(':')[1]))
                 if '#EXT-X-TARGETDURATION' in line:
                     fragment_duration = int(line.split(':')[1])
-            if not all({total_duration, fragment_duration}):
+            if not (total_duration and fragment_duration):
                 raise DownloadError('Unable to get required video info')
 
             ctx = {