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-rw-r--r--youtube_dl/YoutubeDL.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index cc5f76157..c76f1118e 100644
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -529,7 +529,7 @@ class YoutubeDL(object):
return
if self.params.get('writethumbnail', False):
- if 'thumbnail' in info_dict:
+ if info_dict.get('thumbnail') is not None:
thumb_format = determine_ext(info_dict['thumbnail'], u'jpg')
thumb_filename = filename.rpartition('.')[0] + u'.' + thumb_format
self.to_screen(u'[%s] %s: Downloading thumbnail ...' %