diff --git a/@vates/event-listeners-manager/index.js b/@vates/event-listeners-manager/index.js
index 17fba462d..8992c1048 100644
--- a/@vates/event-listeners-manager/index.js
+++ b/@vates/event-listeners-manager/index.js
@@ -9,7 +9,7 @@ exports.EventListenersManager = class EventListenersManager {
   }
 
   add(type, listener) {
-    let listeners = this._listeners[type]
+    let listeners = this._listeners.get(type)
     if (listeners === undefined) {
       listeners = new Set()
       this._listeners.set(type, listeners)
diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index 541f4300b..b4d826ddd 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -29,6 +29,7 @@
 
 <!--packages-start-->
 
+- @vates/event-listeners-manager patch
 - @vates/read-chunk major
 - xo-server patch