diff --git a/youtube_dl/extractor/cbs.py b/youtube_dl/extractor/cbs.py
index 759b3d7de..b40e1e6bf 100644
--- a/youtube_dl/extractor/cbs.py
+++ b/youtube_dl/extractor/cbs.py
@@ -6,7 +6,8 @@ from ..utils import (
     find_xpath_attr,
     xpath_element,
     xpath_text,
-    update_url_query,
+    ExtractorError,
+    update_url_query
 )