diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index 74f413d5..cccacba5 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -27,7 +27,7 @@
 * [Scheme](#scheme)
 * [Shell](#shell)
 * [Swift](#swift)
-* [NodeJS](#NodeJS)
+* [NodeJS](#nodejs)
 * [Vim](#vim)
 * [Visual Prolog](#visual-prolog)