diff --git a/django/frontend/static/js/api/Notice.js b/django/frontend/static/js/api/Notice.js
index a296d1a..66c9cb7 100644
--- a/django/frontend/static/js/api/Notice.js
+++ b/django/frontend/static/js/api/Notice.js
@@ -49,7 +49,7 @@ export default class Notice {
 
 	async stop() {
 		if (this._socket) {
-			while (!this._socket.OPEN)
+			while (!this._socket.readyState === 1)
 				await sleep(100);
 			this._socket.close()
 			this._socket = undefined;