diff --git a/nix/windows/default.nix b/nix/windows/default.nix
index 830572ac6..b87f76c4d 100644
--- a/nix/windows/default.nix
+++ b/nix/windows/default.nix
@@ -77,7 +77,7 @@ in rec {
   };
   nac3artiq = pkgs.rustPlatform.buildRustPackage {
     name = "nac3artiq-msys2";
-    src = ../.;
+    src = ../../.;
     cargoLock = { lockFile = ../../Cargo.lock; };
     nativeBuildInputs = [ pkgs.wineWowPackages.stable pkgs.zip ];
     buildPhase =