diff --git a/.flake8 b/.flake8
index c8dc0cc6..7207bf81 100644
--- a/.flake8
+++ b/.flake8
@@ -8,6 +8,7 @@ exclude =
     venv/
     .venv/
     wix/
+    hotkey/darwin.py  # FIXME: Check under macOS VM at some point
 
 # Show exactly where in a line the error happened
 #show-source = True
diff --git a/hotkey/darwin.py b/hotkey/darwin.py
index 9989b4f9..102a73fa 100644
--- a/hotkey/darwin.py
+++ b/hotkey/darwin.py
@@ -56,7 +56,7 @@ class MacHotkeyMgr(AbstractHotkeyMgr):
             pathlib.Path(config.respath_path) / 'snd_bad.wav', False
         )
 
-    def register(self, root: tk.Tk, keycode, modifiers) -> None:
+    def register(self, root: tk.Tk, keycode: int, modifiers: int) -> None:
         """
         Register current hotkey for monitoring.