1 files changed, 9 insertions, 2 deletions
diff --git a/ext/websocket/01_websocket.js b/ext/websocket/01_websocket.js
index 2284a0e77..a30a74cad 100644
--- a/ext/websocket/01_websocket.js
+++ b/ext/websocket/01_websocket.js
@@ -10,8 +10,14 @@
   const webidl = window.__bootstrap.webidl;
   const { HTTP_TOKEN_CODE_POINT_RE } = window.__bootstrap.infra;
   const { DOMException } = window.__bootstrap.domException;
-  const { Event, ErrorEvent, CloseEvent, MessageEvent, defineEventHandler } =
-    window.__bootstrap.event;
+  const {
+    Event,
+    ErrorEvent,
+    CloseEvent,
+    MessageEvent,
+    defineEventHandler,
+    _skipInternalInit,
+  } = window.__bootstrap.event;
   const { EventTarget } = window.__bootstrap.eventTarget;
   const { Blob, BlobPrototype } = globalThis.__bootstrap.file;
   const {
@@ -440,6 +446,7 @@
             const event = new MessageEvent("message", {
               data,
               origin: this[_url],
+              [_skipInternalInit]: true,
             });
             this.dispatchEvent(event);
             break;