page_name = toks_url[1]
         if 'thumbnails' == page_name:
             self._send_thumbnail(FilePathStr(toks_url[2]))
-        if 'dl' == page_name:
+        elif 'dl' == page_name:
             self._send_or_download_video(VideoId(toks_url[2]),
                                          parse_qs(url.query))
-        if 'videos' == page_name:
+        elif 'videos' == page_name:
             self._send_videos_index()
-        if 'query' == page_name:
+        elif 'query' == page_name:
             self._send_query_page(QueryId(toks_url[2]))
         else:  # e.g. for /
             self._send_queries_index_and_search()