diff --git a/youtube_dl/extractor/tf1.py b/youtube_dl/extractor/tf1.py
index 5c0fcef58..07cc81226 100644
--- a/youtube_dl/extractor/tf1.py
+++ b/youtube_dl/extractor/tf1.py
@@ -40,7 +40,7 @@ def _real_extract(self, url):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
         embed_url = self._html_search_regex(
-            r'["\'](http(?:s)?://www.wat.tv/embedframe/.*?)["\']', webpage, 'embed url')
+            r'["\'](https?://www.wat.tv/embedframe/.*?)["\']', webpage, 'embed url')
         embed_page = self._download_webpage(embed_url, video_id,
                                             'Downloading embed player page')
         wat_id = self._search_regex(r'UVID=(.*?)&', embed_page, 'wat id')