1 files changed, 2 insertions, 0 deletions
diff --git a/WebCore/bindings/v8/custom/V8MessageEventCustom.cpp b/WebCore/bindings/v8/custom/V8MessageEventCustom.cpp
index d41a785..cca4a24 100644
--- a/WebCore/bindings/v8/custom/V8MessageEventCustom.cpp
+++ b/WebCore/bindings/v8/custom/V8MessageEventCustom.cpp
@@ -84,6 +84,8 @@ v8::Handle<v8::Value> V8MessageEvent::initMessageEventCallback(const v8::Argumen
             return v8::Undefined();
     }
     event->initMessageEvent(typeArg, canBubbleArg, cancelableArg, dataArg.release(), originArg, lastEventIdArg, sourceArg, portArray.release());
+    v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
+    SerializedScriptValue::deserializeAndSetProperty(args.Holder(), "data", dataAttr, event->data());
     return v8::Undefined();
   }