diff --git a/CONTRIBUTING.MD b/CONTRIBUTING.MD
index e8314d3..af18df8 100644
--- a/CONTRIBUTING.MD
+++ b/CONTRIBUTING.MD
@@ -29,8 +29,4 @@ What to do
  - `cargo publish`
  - Update web demo & pull server (`make docker`)
  - Update aur package
-
-Test `default.nix` with
-``sh
-nix-build -E 'let pkgs = import <nixpkgs> { }; in pkgs.callPackage ./default.nix {}'
-``
\ No newline at end of file
+ - Update `default.nix` (test with `make nix`)
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 10188e0..37be58f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,9 @@
 release:
 	cargo build --release
 
+nix:
+	nix-build -E 'let pkgs = import <nixpkgs> { }; in pkgs.callPackage ./default.nix {}'
+
 test:
 	cargo test