diff --git a/youtube_dlc/options.py b/youtube_dlc/options.py
index f3b243050..b7d1c436a 100644
--- a/youtube_dlc/options.py
+++ b/youtube_dlc/options.py
@@ -881,7 +881,7 @@ def parseOpts(overrideArguments=None):
     extractor = optparse.OptionGroup(parser, 'SponSkrub Options (SponsorBlock)')
     extractor.add_option(
         '--sponskrub',
-        action='store_true', dest='sponskrub', default=False,  # should default be None instead?
+        action='store_true', dest='sponskrub', default=None,
         help='Use sponskrub to mark sponsored sections with the data available in SponsorBlock API (Youtube only)')
     extractor.add_option(
         '--no-sponskrub',