diff --git a/flake.nix b/flake.nix
index e73f253..d5a47e9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -79,6 +79,7 @@
 
       perSystem = { config, system, pkgs, ... }:
         let
+          rustTarget = "${pkgs.hostPlatform.qemuArch}-unknown-uefi";
           pkgs = import nixpkgs {
             system = system;
             overlays = [
@@ -89,7 +90,7 @@
           inherit (pkgs) lib;
 
           uefi-rust-stable = pkgs.rust-bin.fromRustupToolchainFile ./rust/uefi/rust-toolchain.toml;
-          craneLib = crane.lib.x86_64-linux.overrideToolchain uefi-rust-stable;
+          craneLib = crane.lib.${system}.overrideToolchain uefi-rust-stable;
 
           # Build attributes for a Rust application.
           buildRustApp = lib.makeOverridable (
@@ -145,7 +146,7 @@
           stubCrane = buildRustApp {
             pname = "lanzaboote-stub";
             src = craneLib.cleanCargoSource ./rust/uefi;
-            target = "x86_64-unknown-uefi";
+            target = rustTarget;
             doCheck = false;
           };