1 files changed, 2 insertions, 9 deletions
diff --git a/components/script/dom/promiserejectionevent.rs b/components/script/dom/promiserejectionevent.rs
index 4e4a148905a..19bf96b9b12 100644
--- a/components/script/dom/promiserejectionevent.rs
+++ b/components/script/dom/promiserejectionevent.rs
@@ -5,7 +5,7 @@
 use crate::dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use crate::dom::bindings::codegen::Bindings::PromiseRejectionEventBinding;
 use crate::dom::bindings::codegen::Bindings::PromiseRejectionEventBinding::PromiseRejectionEventMethods;
-use crate::dom::bindings::error::{Error, Fallible};
+use crate::dom::bindings::error::Fallible;
 use crate::dom::bindings::inheritance::Castable;
 use crate::dom::bindings::reflector::reflect_dom_object;
 use crate::dom::bindings::root::DomRoot;
@@ -72,14 +72,7 @@ impl PromiseRejectionEvent {
         init: RootedTraceableBox<PromiseRejectionEventBinding::PromiseRejectionEventInit>,
     ) -> Fallible<DomRoot<Self>> {
         let reason = init.reason.handle();
-        let promise = match init.promise.as_ref() {
-            Some(promise) => promise.clone(),
-            None => {
-                return Err(Error::Type(
-                    "required member promise is undefined.".to_string(),
-                ));
-            },
-        };
+        let promise = init.promise.clone();
         let bubbles = EventBubbles::from(init.parent.bubbles);
         let cancelable = EventCancelable::from(init.parent.cancelable);