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-rw-r--r--components/script/dom/performance.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/script/dom/performance.rs b/components/script/dom/performance.rs
index 82b931b0c2e..fc57eaba869 100644
--- a/components/script/dom/performance.rs
+++ b/components/script/dom/performance.rs
@@ -14,6 +14,7 @@ use time;
pub type DOMHighResTimeStamp = f64;
#[deriving(Encodable)]
+#[must_root]
pub struct Performance {
reflector_: Reflector,
timing: JS<PerformanceTiming>,