diff --git a/pages/03.bsd/02.non-standard-shell/default.en.md b/pages/03.bsd/02.non-standard-shell/default.en.md
index dd4377f..c8814c4 100644
--- a/pages/03.bsd/02.non-standard-shell/default.en.md
+++ b/pages/03.bsd/02.non-standard-shell/default.en.md
@@ -2,6 +2,7 @@
 title: 'Non-Standard Shell'
 ---
 
+[toc]
 When trying to use a non-standard shell, `chsh` will throw the following error:  
 `chsh: /usr/local/bin/zsh: non-standard shell`