diff --git a/youtube_dl/extractor/polskieradio.py b/youtube_dl/extractor/polskieradio.py
index 774342948..978d6f813 100644
--- a/youtube_dl/extractor/polskieradio.py
+++ b/youtube_dl/extractor/polskieradio.py
@@ -65,7 +65,7 @@ class PolskieRadioIE(InfoExtractor):
         webpage = self._download_webpage(url, playlist_id)
 
         content = self._search_regex(
-            r'(?s)<div[^>]+class="\s+this-article\s+"[^>]*>(.+?)<div class="tags">',
+            r'(?s)<div[^>]+class="\s*this-article\s*"[^>]*>(.+?)<div[^>]+class="tags"[^>]*>',
             webpage, 'content')
 
         timestamp = unified_timestamp(self._html_search_regex(