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-rw-r--r--components/script/dom/htmloptionelement.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/script/dom/htmloptionelement.rs b/components/script/dom/htmloptionelement.rs
index 28b7f0651ae..93ed56c437e 100644
--- a/components/script/dom/htmloptionelement.rs
+++ b/components/script/dom/htmloptionelement.rs
@@ -23,6 +23,7 @@ use dom::virtualmethods::VirtualMethods;
use util::str::{DOMString, split_html_space_chars};
#[dom_struct]
+#[derive(HeapSizeOf)]
pub struct HTMLOptionElement {
htmlelement: HTMLElement
}