diff --git a/youtube_dl/extractor/sverigesradio.py b/youtube_dl/extractor/sverigesradio.py
index cfbf1f7a9..64c6268d5 100644
--- a/youtube_dl/extractor/sverigesradio.py
+++ b/youtube_dl/extractor/sverigesradio.py
@@ -21,6 +21,7 @@ class SverigesRadioIE(InfoExtractor):
             # TODO more properties (see youtube_dl/extractor/common.py)
         }
 
+
 class SverigesRadioArtikelIE(SverigesRadioIE):
     _VALID_URL = r'https?://(?:www\.)?sverigesradio\.se/sida/artikel.aspx\?(.*)artikel=(?P<id>[0-9]*)'
     _TEST = {
@@ -39,6 +40,7 @@ class SverigesRadioArtikelIE(SverigesRadioIE):
     }
     SR_type = 'publication'
 
+
 class SverigesRadioAvsnittIE(SverigesRadioIE):
     _VALID_URL = r'https?://(?:www\.)?sverigesradio\.se/sida/avsnitt/(?P<id>[0-9]*)'
     _TESTS = [{