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-rw-r--r--components/script/dom/bindings/global.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/script/dom/bindings/global.rs b/components/script/dom/bindings/global.rs
index 8079c796094..0b65fabfec0 100644
--- a/components/script/dom/bindings/global.rs
+++ b/components/script/dom/bindings/global.rs
@@ -26,6 +26,7 @@ use url::Url;
use std::ptr;
/// A freely-copyable reference to a rooted global object.
+#[deriving(Copy)]
pub enum GlobalRef<'a> {
Window(JSRef<'a, window::Window>),
Worker(JSRef<'a, WorkerGlobalScope>),