1 files changed, 1 insertions, 1 deletions
diff --git a/components/script/dom/mutationobserver.rs b/components/script/dom/mutationobserver.rs
index d923311e09c..12e9f2b046d 100644
--- a/components/script/dom/mutationobserver.rs
+++ b/components/script/dom/mutationobserver.rs
@@ -80,7 +80,7 @@ impl MutationObserver {
     fn new_inherited(callback: Rc<MutationCallback>) -> MutationObserver {
         MutationObserver {
             reflector_: Reflector::new(),
-            callback: callback,
+            callback,
             record_queue: DomRefCell::new(vec![]),
             node_list: DomRefCell::new(vec![]),
         }