diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
index 99856f338e..78ced5128d 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
@@ -29,7 +29,7 @@ void NumberFormatConstructor::initialize(GlobalObject& global_object)
     define_direct_property(vm.names.prototype, global_object.intl_number_format_prototype(), 0);
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
-    define_old_native_function(vm.names.supportedLocalesOf, supported_locales_of, 1, attr);
+    define_native_function(vm.names.supportedLocalesOf, supported_locales_of, 1, attr);
 
     define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
 }
@@ -65,7 +65,7 @@ ThrowCompletionOr<Object*> NumberFormatConstructor::construct(FunctionObject& ne
 }
 
 // 15.3.2 Intl.NumberFormat.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-intl.numberformat.supportedlocalesof
-JS_DEFINE_OLD_NATIVE_FUNCTION(NumberFormatConstructor::supported_locales_of)
+JS_DEFINE_NATIVE_FUNCTION(NumberFormatConstructor::supported_locales_of)
 {
     auto locales = vm.argument(0);
     auto options = vm.argument(1);
@@ -73,10 +73,10 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(NumberFormatConstructor::supported_locales_of)
     // 1. Let availableLocales be %NumberFormat%.[[AvailableLocales]].
 
     // 2. Let requestedLocales be ? CanonicalizeLocaleList(locales).
-    auto requested_locales = TRY_OR_DISCARD(canonicalize_locale_list(global_object, locales));
+    auto requested_locales = TRY(canonicalize_locale_list(global_object, locales));
 
     // 3. Return ? SupportedLocales(availableLocales, requestedLocales, options).
-    return TRY_OR_DISCARD(supported_locales(global_object, requested_locales, options));
+    return TRY(supported_locales(global_object, requested_locales, options));
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h
index 8e4a7e7e6e..7d2cb692ef 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h
@@ -24,7 +24,7 @@ public:
 private:
     virtual bool has_constructor() const override { return true; }
 
-    JS_DECLARE_OLD_NATIVE_FUNCTION(supported_locales_of);
+    JS_DECLARE_NATIVE_FUNCTION(supported_locales_of);
 };
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.cpp
index bdb3c9cae7..d3f59fbf76 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.cpp
@@ -27,17 +27,17 @@ void NumberFormatPrototype::initialize(GlobalObject& global_object)
     define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm, "Intl.NumberFormat"), Attribute::Configurable);
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
-    define_old_native_function(vm.names.resolvedOptions, resolved_options, 0, attr);
+    define_native_function(vm.names.resolvedOptions, resolved_options, 0, attr);
 }
 
 // 15.4.5 Intl.NumberFormat.prototype.resolvedOptions ( ), https://tc39.es/ecma402/#sec-intl.numberformat.prototype.resolvedoptions
-JS_DEFINE_OLD_NATIVE_FUNCTION(NumberFormatPrototype::resolved_options)
+JS_DEFINE_NATIVE_FUNCTION(NumberFormatPrototype::resolved_options)
 {
     // 1. Let nf be the this value.
     // 2. If the implementation supports the normative optional constructor mode of 4.3 Note 1, then
     //     a. Set nf to ? UnwrapNumberFormat(nf).
     // 3. Perform ? RequireInternalSlot(nf, [[InitializedNumberFormat]]).
-    auto* number_format = TRY_OR_DISCARD(typed_this_object(global_object));
+    auto* number_format = TRY(typed_this_object(global_object));
 
     // 4. Let options be ! OrdinaryObjectCreate(%Object.prototype%).
     auto* options = Object::create(global_object, global_object.object_prototype());
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.h b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.h
index 0f79eb6557..16a7408c58 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.h
@@ -20,7 +20,7 @@ public:
     virtual ~NumberFormatPrototype() override = default;
 
 private:
-    JS_DECLARE_OLD_NATIVE_FUNCTION(resolved_options);
+    JS_DECLARE_NATIVE_FUNCTION(resolved_options);
 };
 
 }