diff --git a/src/components/script/dom/bindings/js.rs b/src/components/script/dom/bindings/js.rs
index c8607f58990..e9fe15eb31f 100644
--- a/src/components/script/dom/bindings/js.rs
+++ b/src/components/script/dom/bindings/js.rs
@@ -21,6 +21,7 @@ impl<T> Eq for JS<T> {
 }
 
 impl <T> Clone for JS<T> {
+    #[inline]
     fn clone(&self) -> JS<T> {
         JS {
             ptr: self.ptr.clone()