diff --git a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
index 1348eacf13..643e54e073 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
@@ -21,9 +21,9 @@ void WeakSetPrototype::initialize(GlobalObject& global_object)
     Object::initialize(global_object);
     u8 attr = Attribute::Writable | Attribute::Configurable;
 
-    define_old_native_function(vm.names.add, add, 1, attr);
-    define_old_native_function(vm.names.delete_, delete_, 1, attr);
-    define_old_native_function(vm.names.has, has, 1, attr);
+    define_native_function(vm.names.add, add, 1, attr);
+    define_native_function(vm.names.delete_, delete_, 1, attr);
+    define_native_function(vm.names.has, has, 1, attr);
 
     // 24.4.3.5 WeakSet.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-weakset.prototype-@@tostringtag
     define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), vm.names.WeakSet.as_string()), Attribute::Configurable);
@@ -34,22 +34,20 @@ WeakSetPrototype::~WeakSetPrototype()
 }
 
 // 24.4.3.1 WeakSet.prototype.add ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.add
-JS_DEFINE_OLD_NATIVE_FUNCTION(WeakSetPrototype::add)
+JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::add)
 {
-    auto* weak_set = TRY_OR_DISCARD(typed_this_object(global_object));
+    auto* weak_set = TRY(typed_this_object(global_object));
     auto value = vm.argument(0);
-    if (!value.is_object()) {
-        vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObject, value.to_string_without_side_effects());
-        return {};
-    }
+    if (!value.is_object())
+        return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObject, value.to_string_without_side_effects());
     weak_set->values().set(&value.as_object(), AK::HashSetExistingEntryBehavior::Keep);
     return weak_set;
 }
 
 // 24.4.3.3 WeakSet.prototype.delete ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.delete
-JS_DEFINE_OLD_NATIVE_FUNCTION(WeakSetPrototype::delete_)
+JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::delete_)
 {
-    auto* weak_set = TRY_OR_DISCARD(typed_this_object(global_object));
+    auto* weak_set = TRY(typed_this_object(global_object));
     auto value = vm.argument(0);
     if (!value.is_object())
         return Value(false);
@@ -57,9 +55,9 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(WeakSetPrototype::delete_)
 }
 
 // 24.4.3.4 WeakSet.prototype.has ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.has
-JS_DEFINE_OLD_NATIVE_FUNCTION(WeakSetPrototype::has)
+JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::has)
 {
-    auto* weak_set = TRY_OR_DISCARD(typed_this_object(global_object));
+    auto* weak_set = TRY(typed_this_object(global_object));
     auto value = vm.argument(0);
     if (!value.is_object())
         return Value(false);
diff --git a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.h b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.h
index 9dbb6e9de1..50351c2684 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.h
@@ -20,9 +20,9 @@ public:
     virtual ~WeakSetPrototype() override;
 
 private:
-    JS_DECLARE_OLD_NATIVE_FUNCTION(add);
-    JS_DECLARE_OLD_NATIVE_FUNCTION(delete_);
-    JS_DECLARE_OLD_NATIVE_FUNCTION(has);
+    JS_DECLARE_NATIVE_FUNCTION(add);
+    JS_DECLARE_NATIVE_FUNCTION(delete_);
+    JS_DECLARE_NATIVE_FUNCTION(has);
 };
 
 }