diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py
index fabac9fd2..e3cab4dd0 100644
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@@ -628,6 +628,7 @@ def compat_struct_unpack(spec, *args):
     'compat_html_entities',
     'compat_http_client',
     'compat_http_server',
+    'compat_input',
     'compat_itertools_count',
     'compat_kwargs',
     'compat_ord',