diff --git a/browser/main/Detail/MarkdownNoteDetail.js b/browser/main/Detail/MarkdownNoteDetail.js
index 2c9c8d91..9d05d4a3 100755
--- a/browser/main/Detail/MarkdownNoteDetail.js
+++ b/browser/main/Detail/MarkdownNoteDetail.js
@@ -311,7 +311,7 @@ class MarkdownNoteDetail extends React.Component {
   }
 
   getToggleLockButton () {
-    return this.state.isLocked ? '../resources/icon/icon-previewoff-on.svg' : '../resources/icon/icon-previewoff-off.svg'
+    return this.state.isLocked ? '../resources/icon/icon-lock.svg' : '../resources/icon/icon-unlock.svg'
   }
 
   handleDeleteKeyDown (e) {