diff --git a/mail_move_message/static/src/js/mail_move_message.js b/mail_move_message/static/src/js/mail_move_message.js
index 4848813..b596446 100644
--- a/mail_move_message/static/src/js/mail_move_message.js
+++ b/mail_move_message/static/src/js/mail_move_message.js
@@ -50,7 +50,7 @@ odoo.define("mail_move_message.relocate", function(require) {
             var result = this._super.apply(this, arguments);
             // For show wizard in the form
             if (this.fields.thread && this.fields.thread.thread) {
-                var thread = this.fields.thread.thread;
+                thread = this.fields.thread.thread;
                 thread.on("move_message", this, thread.on_move_message);
             }
             return $.when(result).done(function() {});