diff --git a/youtube_dl/extractor/bbc.py b/youtube_dl/extractor/bbc.py
index 5525f7c9b9..8b20c03d6e 100644
--- a/youtube_dl/extractor/bbc.py
+++ b/youtube_dl/extractor/bbc.py
@@ -386,7 +386,7 @@ class BBCCoUkIE(InfoExtractor):
                             m3u8_id=format_id, fatal=False))
                         if re.search(self._USP_RE, href):
                             usp_formats = self._extract_m3u8_formats(
-                                re.sub(self._USP_RE, r'/\1\.ism/\1\.m3u8', href),
+                                re.sub(self._USP_RE, r'/\1.ism/\1.m3u8', href),
                                 programme_id, ext='mp4', entry_protocol='m3u8_native',
                                 m3u8_id=format_id, fatal=False)
                             for f in usp_formats: