diff --git a/flake.nix b/flake.nix
index 3884160418be..7651ead65fa6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,14 +44,14 @@
                 python3
                 gnumake
               ]
-              ++ lib.optionals stdenv.isLinux [
+              ++ lib.optionals stdenv.hostPlatform.isLinux [
                 gcc
                 pkg-config
                 # browser-secret helper links against the host's libsecret.
                 libsecret
                 imagemagick
               ]
-              ++ lib.optionals stdenv.isDarwin [
+              ++ lib.optionals stdenv.hostPlatform.isDarwin [
                 # clang toolchain for node-gyp on macOS.
                 clang
               ];