_CUSTOM_URL_REGEX = re.compile(r'spikenetworkapp://([^/]+/[-a-fA-F0-9]+)')
 
     def _extract_mgid(self, webpage):
-        mgid = super(SpikeIE, self)._extract_mgid(webpage, default=None)
+        mgid = super(SpikeIE, self)._extract_mgid(webpage)
         if mgid is None:
             url_parts = self._search_regex(self._CUSTOM_URL_REGEX, webpage, 'episode_id')
             video_type, episode_id = url_parts.split('/', 1)