diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py
index 2f43d987c..d1b86bd13 100644
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@@ -3014,7 +3014,6 @@ __all__ = [
     'compat_shlex_quote',
     'compat_shlex_split',
     'compat_socket_create_connection',
-    'compat_st_mtime',
     'compat_str',
     'compat_struct_pack',
     'compat_struct_unpack',