diff --git a/src/renderer/src/store/settings.ts b/src/renderer/src/store/settings.ts
index dca1ff74..18dba29f 100644
--- a/src/renderer/src/store/settings.ts
+++ b/src/renderer/src/store/settings.ts
@@ -96,7 +96,7 @@ const initialState: SettingsState = {
   renderInputMessageAsMarkdown: false,
   codeShowLineNumbers: false,
   codeCollapsible: false,
-  mathEngine: 'MathJax',
+  mathEngine: 'KaTeX',
   messageStyle: 'plain',
   codeStyle: 'auto',
   webdavHost: '',