diff --git a/app/ghcup/BrickMain.hs b/app/ghcup/BrickMain.hs
index 7143f52..4e449a7 100644
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -61,7 +61,9 @@ import qualified Data.Text.Lazy                as L
 import qualified Graphics.Vty                  as Vty
 import qualified Data.Vector                   as V
 import System.Environment (getExecutablePath)
+#if !IS_WINDOWS
 import qualified System.Posix.Process          as SPP
+#endif
 
 
 hiddenTools :: [Tool]
@@ -500,12 +502,15 @@ install' _ (_, ListResult {..}) = do
             forM_ (_viPostInstall =<< vi) $ \msg -> logInfo msg
             case lTool of
               GHCup -> do
+#if !IS_WINDOWS
                 up <- liftIO $ fmap (either (const Nothing) Just)
                   $ try @_ @SomeException $ canonicalizePath (binDir </> "ghcup" <.> exeExt)
                 when ((normalise <$> up) == Just (normalise ce)) $
                   -- TODO: track cli arguments of previous invocation
                   liftIO $ SPP.executeFile ce False ["tui"] Nothing
+#else
                 logInfo "Please restart 'ghcup' for the changes to take effect"
+#endif
               _ -> pure ()
             pure $ Right ()
           VRight (vi, _, _) -> do
diff --git a/lib/GHCup/Types.hs b/lib/GHCup/Types.hs
index 974a9ab..53b3c3c 100644
--- a/lib/GHCup/Types.hs
+++ b/lib/GHCup/Types.hs
@@ -475,7 +475,7 @@ data KeyBindings = KeyBindings
   deriving (Show, GHC.Generic)
 
 instance NFData KeyBindings
-#if defined(IS_WINDOWS) || !defined(BRICK)
+#if !defined(BRICK)
 instance NFData Key
 
 instance NFData Modifier