diff --git a/src/components/script/dom/event.rs b/src/components/script/dom/event.rs
index 898e6a3700e..ff6fa73fc10 100644
--- a/src/components/script/dom/event.rs
+++ b/src/components/script/dom/event.rs
@@ -67,7 +67,7 @@ impl Event {
             type_: ~"",
             canceled: false,
             cancelable: true,
-            bubbles: true,
+            bubbles: false,
             trusted: false,
             dispatching: false,
             stop_propagation: false,