diff --git a/addons/web_editor/static/lib/odoo-editor/src/powerbox/Powerbox.js b/addons/web_editor/static/lib/odoo-editor/src/powerbox/Powerbox.js
index b7acdbc21f5..7c5c0989138 100644
--- a/addons/web_editor/static/lib/odoo-editor/src/powerbox/Powerbox.js
+++ b/addons/web_editor/static/lib/odoo-editor/src/powerbox/Powerbox.js
@@ -12,6 +12,7 @@ function cycle(num, max) {
 
 export class Powerbox {
     constructor(options = {}) {
+        this._active = false;
         this.options = options;
         if (!this.options._t) this.options._t = string => string;