diff --git a/README.md b/README.md
index 2bc283d..f9f6026 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ First clone this repository, then
   `users.extraUsers.<name>.packages` or into your home-manager configuration packages
 
 ### with nix-build
-* `nix-build  -E 'with import <nixpkgs> {}; pkgs.callPackage ./default.nix { }'
+* `nix-build  -E 'with import <nixpkgs> {}; pkgs.callPackage ./default.nix { }'`
 
 
 ### Installation parameters