X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/fe979149c83b5a935f7d28baf75848a9137316fd..32a2f18adaeaf75bc79efd695e7f434bac37a455:/youtube_dl/extractor/teachingchannel.py

diff --git a/youtube_dl/extractor/teachingchannel.py b/youtube_dl/extractor/teachingchannel.py
index d14d93e..e897597 100644
--- a/youtube_dl/extractor/teachingchannel.py
+++ b/youtube_dl/extractor/teachingchannel.py
@@ -7,7 +7,7 @@ from .ooyala import OoyalaIE
 
 
 class TeachingChannelIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.teachingchannel\.org/videos/(?P<title>.+)'
+    _VALID_URL = r'https?://(?:www\.)?teachingchannel\.org/videos/(?P<title>.+)'
 
     _TEST = {
         'url': 'https://www.teachingchannel.org/videos/teacher-teaming-evolution',