diff --git a/src/canvas/view/FrameView.js b/src/canvas/view/FrameView.js
index b46374fc2..ab01e1e34 100644
--- a/src/canvas/view/FrameView.js
+++ b/src/canvas/view/FrameView.js
@@ -259,6 +259,7 @@ export default Backbone.View.extend({
     const win = this.getWindow();
     const conf = em.get('Config');
     const extStyles = [];
+    win._isEditor = true;
 
     config.styles.forEach(href =>
       extStyles.push(