diff --git a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
index b5f4360e23..60ea1fb0c4 100644
--- a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
@@ -9,9 +9,9 @@
 
 namespace Web::UIEvents {
 
-FocusEvent* FocusEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, FocusEventInit const& event_init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<FocusEvent>> FocusEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, FocusEventInit const& event_init)
 {
-    return realm.heap().allocate<FocusEvent>(realm, realm, event_name, event_init).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(realm.heap().allocate<FocusEvent>(realm, realm, event_name, event_init));
 }
 
 FocusEvent::FocusEvent(JS::Realm& realm, DeprecatedFlyString const& event_name, FocusEventInit const& event_init)
diff --git a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.h b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.h
index 1ef560ca9a..48a2ab326d 100644
--- a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.h
+++ b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.h
@@ -18,7 +18,7 @@ class FocusEvent final : public UIEvent {
     WEB_PLATFORM_OBJECT(FocusEvent, UIEvent);
 
 public:
-    static FocusEvent* construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, FocusEventInit const& event_init);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<FocusEvent>> construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, FocusEventInit const& event_init);
 
     virtual ~FocusEvent() override;