diff --git a/browser/main/Detail/MarkdownNoteDetail.js b/browser/main/Detail/MarkdownNoteDetail.js
index b0be06b0..82073162 100755
--- a/browser/main/Detail/MarkdownNoteDetail.js
+++ b/browser/main/Detail/MarkdownNoteDetail.js
@@ -277,7 +277,7 @@ class MarkdownNoteDetail extends React.Component {
 
   handleSwitchMode (type) {
     this.setState({ editorType: type }, () => {
-      this.focus();
+      this.focus()
       const newConfig = Object.assign({}, this.props.config)
       newConfig.editor.type = type
       ConfigManager.set(newConfig)