1 files changed, 1 insertions, 1 deletions
diff --git a/components/script/dom/websocket.rs b/components/script/dom/websocket.rs
index 009ca43a78b..75c868b50db 100644
--- a/components/script/dom/websocket.rs
+++ b/components/script/dom/websocket.rs
@@ -247,7 +247,7 @@ impl WebSocketTaskHandler {
         let event = Event::new(global.r(),
             "open".to_owned(),
             EventBubbles::DoesNotBubble,
-            EventCancelable::Cancelable).root();
+            EventCancelable::NotCancelable).root();
         let target: JSRef<EventTarget> = EventTargetCast::from_ref(ws);
         event.r().fire(target);
     }