diff --git a/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp b/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
index 7bcf7361c5..a761e47847 100644
--- a/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
@@ -9,12 +9,12 @@
 
 namespace Web::HTML {
 
-CloseEvent* CloseEvent::create(JS::Realm& realm, DeprecatedFlyString const& event_name, CloseEventInit const& event_init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<CloseEvent>> CloseEvent::create(JS::Realm& realm, DeprecatedFlyString const& event_name, CloseEventInit const& event_init)
 {
-    return realm.heap().allocate<CloseEvent>(realm, realm, event_name, event_init).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(realm.heap().allocate<CloseEvent>(realm, realm, event_name, event_init));
 }
 
-CloseEvent* CloseEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, CloseEventInit const& event_init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<CloseEvent>> CloseEvent::construct_impl(JS::Realm& realm, DeprecatedFlyString const& event_name, CloseEventInit const& event_init)
 {
     return create(realm, event_name, event_init);
 }
diff --git a/Userland/Libraries/LibWeb/HTML/CloseEvent.h b/Userland/Libraries/LibWeb/HTML/CloseEvent.h
index fb2886bc8b..d69334eecf 100644
--- a/Userland/Libraries/LibWeb/HTML/CloseEvent.h
+++ b/Userland/Libraries/LibWeb/HTML/CloseEvent.h
@@ -21,8 +21,8 @@ class CloseEvent : public DOM::Event {
     WEB_PLATFORM_OBJECT(CloseEvent, DOM::Event);
 
 public:
-    static CloseEvent* create(JS::Realm&, DeprecatedFlyString const& event_name, CloseEventInit const& event_init = {});
-    static CloseEvent* construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, CloseEventInit const& event_init);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<CloseEvent>> create(JS::Realm&, DeprecatedFlyString const& event_name, CloseEventInit const& event_init = {});
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<CloseEvent>> construct_impl(JS::Realm&, DeprecatedFlyString const& event_name, CloseEventInit const& event_init);
 
     virtual ~CloseEvent() override;
 
diff --git a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
index df3b82acfa..b0557d189d 100644
--- a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
+++ b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
@@ -222,7 +222,7 @@ void WebSocket::on_close(u16 code, DeprecatedString reason, bool was_clean)
     event_init.was_clean = was_clean;
     event_init.code = code;
     event_init.reason = move(reason);
-    dispatch_event(*HTML::CloseEvent::create(realm(), HTML::EventNames::close, event_init));
+    dispatch_event(HTML::CloseEvent::create(realm(), HTML::EventNames::close, event_init).release_value_but_fixme_should_propagate_errors());
 }
 
 // https://websockets.spec.whatwg.org/#feedback-from-the-protocol