diff --git a/kitty/utils.py b/kitty/utils.py
index ada0e40da..f69ac64f0 100644
--- a/kitty/utils.py
+++ b/kitty/utils.py
@@ -24,7 +24,7 @@ from .constants import (
 )
 from .options_stub import Options
 from .rgb import Color, to_color
-from .types import ConvertibleToNumbers, run_once
+from .types import run_once
 from .typing import AddressFamily, PopenType, Socket, StartupCtx