diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
index 7aa01d7aed..a5015c7d1c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
@@ -83,7 +83,7 @@ void HTMLFormElement::submit_form(JS::GCPtr<HTMLElement> submitter, bool from_su
 
         SubmitEventInit event_init {};
         event_init.submitter = submitter_button;
-        auto submit_event = SubmitEvent::create(realm(), EventNames::submit, event_init);
+        auto submit_event = SubmitEvent::create(realm(), EventNames::submit, event_init).release_value_but_fixme_should_propagate_errors();
         submit_event->set_bubbles(true);
         submit_event->set_cancelable(true);
         bool continue_ = dispatch_event(*submit_event);
diff --git a/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp b/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
index 3310d1b622..7b3afda13e 100644
--- a/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
@@ -9,12 +9,12 @@
 
 namespace Web::HTML {
 
-SubmitEvent* SubmitEvent::create(JS::Realm& realm, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<SubmitEvent>> SubmitEvent::create(JS::Realm& realm, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init)
 {
-    return realm.heap().allocate<SubmitEvent>(realm, realm, event_name, event_init).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(realm.heap().allocate<SubmitEvent>(realm, realm, event_name, event_init));
 }
 
-SubmitEvent* SubmitEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<SubmitEvent>> SubmitEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init)
 {
     return create(realm, event_name, event_init);
 }
diff --git a/Userland/Libraries/LibWeb/HTML/SubmitEvent.h b/Userland/Libraries/LibWeb/HTML/SubmitEvent.h
index a7cece8c14..79861def20 100644
--- a/Userland/Libraries/LibWeb/HTML/SubmitEvent.h
+++ b/Userland/Libraries/LibWeb/HTML/SubmitEvent.h
@@ -19,8 +19,8 @@ class SubmitEvent final : public DOM::Event {
     WEB_PLATFORM_OBJECT(SubmitEvent, DOM::Event);
 
 public:
-    static SubmitEvent* create(JS::Realm&, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init);
-    static SubmitEvent* construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<SubmitEvent>> create(JS::Realm&, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<SubmitEvent>> construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, SubmitEventInit const& event_init);
 
     virtual ~SubmitEvent() override;