diff --git a/kittens/hints/main.py b/kittens/hints/main.py
index 4520c9657..3a57907d1 100644
--- a/kittens/hints/main.py
+++ b/kittens/hints/main.py
@@ -36,7 +36,7 @@ def kitty_common_opts() -> 'KittyCommonOpts':
     import json
     v = os.environ.get('KITTY_COMMON_OPTS')
     if v:
-        return cast(KittyCommonOpts, json.loads(v))
+        return cast('KittyCommonOpts', json.loads(v))
     from kitty.config import common_opts_as_dict
     return common_opts_as_dict()