@@ -105,7 +105,7 @@ FILE_DOWNLOAD_CACHE_CONTROL = Config(
RESTRICT_FILE_EXTENSIONS = Config(
key='restrict_file_extensions',
- default='',
+ default=None,
type=coerce_csv,
help=_(
'Specify file extensions that are not allowed, separated by commas. For example: .exe, .zip, .rar, .tar, .gz'