diff --git a/extensions/mermaid-chat-features/README.md b/extensions/mermaid-chat-features/README.md
index 09a73bc1b1a..4df5d17d156 100644
--- a/extensions/mermaid-chat-features/README.md
+++ b/extensions/mermaid-chat-features/README.md
@@ -1,5 +1,5 @@
-# Markdown Math
+# Mermaid Chat Features
 
 **Notice:** This extension is bundled with Visual Studio Code. It can be disabled but not uninstalled.
 
-Adds math rendering using [KaTeX](https://katex.org) to VS Code's built-in markdown preview and markdown cells in notebooks.
+Adds basic [Mermaid.js](https://mermaid.js.org) diagram rendering to build-in chat.