diff --git a/test/test_utils.py b/test/test_utils.py
index 809a416ab1..aedb565ec1 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -659,6 +659,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(url_or_none('mms://foo.de'), 'mms://foo.de')
         self.assertEqual(url_or_none('rtspu://foo.de'), 'rtspu://foo.de')
         self.assertEqual(url_or_none('ftps://foo.de'), 'ftps://foo.de')
+        self.assertEqual(url_or_none('ws://foo.de'), 'ws://foo.de')
         self.assertEqual(url_or_none('wss://foo.de'), 'wss://foo.de')
 
     def test_parse_age_limit(self):