diff --git a/pxtarget.json b/pxtarget.json
index 8f1f9f3a..fb824398 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -108,7 +108,6 @@
             "zh-CN"
         ],
         "highContrast": true,
-        "lightToc": true,
         "docMenu": [
             {
                 "name": "Support",