diff --git a/youtube_dl/extractor/playwire.py b/youtube_dl/extractor/playwire.py
index bdc71017b..6d138ef25 100644
--- a/youtube_dl/extractor/playwire.py
+++ b/youtube_dl/extractor/playwire.py
@@ -19,7 +19,7 @@ class PlaywireIE(InfoExtractor):
             'id': '3353705',
             'ext': 'mp4',
             'title': 'S04_RM_UCL_Rus',
-            'thumbnail': 're:^http://.*\.png$',
+            'thumbnail': 're:^https?://.*\.png$',
             'duration': 145.94,
         },
     }, {