diff --git a/README.md b/README.md
index 82d1845..349eccb 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,8 @@ jobs:
         install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
         extra_nix_config: |
           experimental-features = nix-command flakes
-    - run: nix-build
+    - run: nix build
+    - run: nix flake check
 ```
 
 To install Nix from any commit, go to [the corresponding installer_test action](https://github.com/NixOS/nix/runs/2219534360) and click on "Run cachix/install-nix-action@XX" step and expand the first line.