diff --git a/youtube_dl/extractor/sonyliv.py b/youtube_dl/extractor/sonyliv.py
index 972cedb05..0e890f909 100644
--- a/youtube_dl/extractor/sonyliv.py
+++ b/youtube_dl/extractor/sonyliv.py
@@ -9,7 +9,8 @@ from ..compat import compat_HTTPError
 from ..utils import (
     ExtractorError,
     int_or_none,
-    try_get
+    try_get,
+    compat_str
 )