diff --git a/default.nix b/default.nix
index 5e82a8f8..35f513d7 100644
--- a/default.nix
+++ b/default.nix
@@ -57,7 +57,7 @@ himalaya.overrideAttrs (drv: {
   # NOTE: manual wineprefix update is somehow needed:
   # <https://github.com/NixOS/nixpkgs/issues/321332>
   postInstall = (drv.postInstall or "") + lib.optionalString hostPlatform.isWindows ''
-    ${lib.getExe' wine "wineboot"} --init
+    export WINEPREFIX="$(${lib.getExe mktemp} -d)"
   '' + ''
     mkdir -p $out/bin/share/{applications,completions,man,services}
     cp assets/himalaya.desktop $out/bin/share/applications/
diff --git a/flake.nix b/flake.nix
index 01262db9..a0680284 100644
--- a/flake.nix
+++ b/flake.nix
@@ -84,12 +84,16 @@
       mkCrossApp = system: crossConfig:
         let
           pkgs = import nixpkgs { inherit system; };
+          mktemp = "${lib.getExe pkgs.mktemp} -d";
           emulator = crossPkgs.hostPlatform.emulator pkgs;
           crossSystem = { config = crossConfig; isStatic = true; };
           crossPkgs = import nixpkgs { inherit system crossSystem; };
           crossPkgName = "cross-${crossPkgs.hostPlatform.system}";
           crossPkgExe = lib.getExe self.packages.${system}.${crossPkgName};
-          program = lib.getExe (pkgs.writeShellScriptBin "himalaya" "${emulator} ${crossPkgExe} $@");
+          program = lib.getExe (pkgs.writeShellScriptBin "himalaya" ''
+            ${lib.optionalString crossPkgs.hostPlatform.isWindows "export WINEPREFIX=$(${mktemp})"}
+            ${emulator} ${crossPkgExe} $@
+          '');
         in
         { "${crossPkgName}" = { inherit program; type = "app"; }; };
     in