diff --git a/README.md b/README.md
index 80b141b..36dce17 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # config
 
+[![built with nix](https://builtwithnix.org/badge.svg)](https://builtwithnix.org)
+
 This repo stores nix expressions and other configuration.
 
 ## Setup
@@ -8,8 +10,7 @@ Clone this as a bare repo to avoid the need for symlinking:
 
 ```console
 $ git clone --bare git@github.com:davegallant/config.git $HOME/.dotfiles
-$ alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME' # add alias to a .bashrc or .zshrc
-$ source ~/.zshrc
+$ alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME' # add alias to a .bashrc / .zshrc
 $ config config --local status.showUntrackedFiles no
 $ config checkout -f # this will overwrite any existing configs in the home directory
 ```