1 files changed, 1 insertions, 1 deletions
diff --git a/components/script/dom/testbinding.rs b/components/script/dom/testbinding.rs
index e0f9af46b3b..b8baddb46ae 100644
--- a/components/script/dom/testbinding.rs
+++ b/components/script/dom/testbinding.rs
@@ -1028,7 +1028,7 @@ impl TestBindingMethods for TestBinding {
             handler: Rc<SimpleCallback>,
         }
         impl SimpleHandler {
-            fn new(callback: Rc<SimpleCallback>) -> Box<Callback> {
+            fn new(callback: Rc<SimpleCallback>) -> Box<dyn Callback> {
                 Box::new(SimpleHandler { handler: callback })
             }
         }