From cc95341a9cdec9d30073fbe5fbec5b546798b54d Mon Sep 17 00:00:00 2001
From: daiziyan <daiziyan@espressif.com>
Date: Mon, 22 Jun 2026 16:23:05 +0800
Subject: [PATCH] docs: fix broken links to the older versions of IDF

---
 docs/_static/js/version_table.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/_static/js/version_table.js b/docs/_static/js/version_table.js
index 49f90bb454b..87b32cfb7d8 100644
--- a/docs/_static/js/version_table.js
+++ b/docs/_static/js/version_table.js
@@ -1,5 +1,9 @@
 $(document).ready(function() {
 
+    if (DOCUMENTATION_OPTIONS.LANGUAGE === 'zh-CN') {
+        DOCUMENTATION_OPTIONS.LANGUAGE = 'zh_CN';
+    }
+
     let version = DOCUMENTATION_OPTIONS.VERSION;
     let language = DOCUMENTATION_OPTIONS.LANGUAGE;
     let idf_target = DOCUMENTATION_OPTIONS.IDF_TARGET;