diff --git a/windows/default.nix b/windows/default.nix
index 21d12d67..35917190 100644
--- a/windows/default.nix
+++ b/windows/default.nix
@@ -102,6 +102,7 @@ in rec {
     ''
     export WINEDEBUG=-all
     export WINEPATH=Z:${msys2-env}/mingw64/bin\;Z:${llvm-nac3}/bin
-    ${pkgs.wineWowPackages.stable}/bin/wine64 cmd
+    export PYO3_CONFIG_FILE=Z:${pyo3-mingw-config}
+    exec ${pkgs.wineWowPackages.stable}/bin/wine64 cmd
     '';
 }