diff --git a/README.md b/README.md
index b0d7bf3..6abb067 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,7 @@ Clone `zsh-vi-mode` into your custom plugins repo
 
 ```shell
 git clone https://github.com/jeffreytse/zsh-vi-mode \
-  $ZSH_CUSTOM/plugins/zsh-vi-mode
+  ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-vi-mode
 ```
 Then load as a plugin in your `.zshrc`