diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index 251575c70a0..6cd38439048 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -2504,6 +2504,8 @@ static void generate_prototype_or_global_mixin_definitions(IDL::Interface const&
     generator.set("namespaced_name", interface.namespaced_name);
     generator.set("class_name", class_name);
     generator.set("fully_qualified_name", interface.fully_qualified_name);
+    generator.set("parent_name", interface.parent_name);
+    generator.set("prototype_base_class", interface.prototype_base_class);
 
     if (interface.pair_iterator_types.has_value()) {
         generator.set("iterator_name", DeprecatedString::formatted("{}Iterator", interface.name));
@@ -2515,6 +2517,7 @@ static void generate_prototype_or_global_mixin_definitions(IDL::Interface const&
 #define define_direct_property (object.define_direct_property)
 #define define_native_accessor (object.define_native_accessor)
 #define define_native_function (object.define_native_function)
+#define set_prototype (object.set_prototype)
 
 JS::ThrowCompletionOr<void> @class_name@::initialize(JS::Realm& realm, JS::Object& object)
 {
@@ -2535,6 +2538,20 @@ JS::ThrowCompletionOr<void> @class_name@::initialize(JS::Realm& realm)
 
 )~~~");
 
+    if (interface.prototype_base_class == "ObjectPrototype") {
+        generator.append(R"~~~(
+
+    set_prototype(realm.intrinsics().object_prototype());
+
+)~~~");
+    } else {
+        generator.append(R"~~~(
+
+    set_prototype(&ensure_web_prototype<@prototype_base_class@>(realm, "@parent_name@"));
+
+)~~~");
+    }
+
     if (interface.has_unscopable_member) {
         generator.append(R"~~~(
     auto unscopable_object = JS::Object::create(realm, nullptr);
@@ -3710,7 +3727,7 @@ namespace Web::Bindings {
 )~~~");
     } else if (!interface.parent_name.is_empty()) {
         generator.append(R"~~~(
-    : Object(ConstructWithPrototypeTag::Tag, ensure_web_prototype<@prototype_base_class@>(realm, "@parent_name@"))
+    : Object(realm, nullptr)
 )~~~");
     } else {
         generator.append(R"~~~(
@@ -3781,7 +3798,9 @@ void generate_iterator_prototype_implementation(IDL::Interface const& interface,
     SourceGenerator generator { builder };
 
     generator.set("name", DeprecatedString::formatted("{}Iterator", interface.name));
+    generator.set("parent_name", interface.parent_name);
     generator.set("prototype_class", DeprecatedString::formatted("{}IteratorPrototype", interface.name));
+    generator.set("prototype_base_class", interface.prototype_base_class);
     generator.set("fully_qualified_name", DeprecatedString::formatted("{}Iterator", interface.fully_qualified_name));
     generator.set("possible_include_path", DeprecatedString::formatted("{}Iterator", interface.name.replace("::"sv, "/"sv, ReplaceMode::All)));
 
@@ -3795,6 +3814,7 @@ void generate_iterator_prototype_implementation(IDL::Interface const& interface,
 #include <LibJS/Runtime/TypedArray.h>
 #include <LibWeb/Bindings/@prototype_class@.h>
 #include <LibWeb/Bindings/ExceptionOrUtils.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 
 #if __has_include(<LibWeb/@possible_include_path@.h>)
 #    include <LibWeb/@possible_include_path@.h>
@@ -3842,6 +3862,24 @@ JS::ThrowCompletionOr<void> @prototype_class@::initialize(JS::Realm& realm)
     auto& vm = this->vm();
     MUST_OR_THROW_OOM(Base::initialize(realm));
 
+)~~~");
+
+    if (interface.prototype_base_class == "ObjectPrototype") {
+        generator.append(R"~~~(
+
+    set_prototype(realm.intrinsics().object_prototype());
+
+)~~~");
+    } else {
+        generator.append(R"~~~(
+
+    set_prototype(&ensure_web_prototype<@prototype_base_class@>(realm, "@parent_name@"));
+
+)~~~");
+    }
+
+    generator.append(R"~~~(
+
     define_native_function(realm, vm.names.next, next, 0, JS::Attribute::Writable | JS::Attribute::Enumerable | JS::Attribute::Configurable);
     define_direct_property(vm.well_known_symbol_to_string_tag(), MUST_OR_THROW_OOM(JS::PrimitiveString::create(vm, "Iterator"sv)), JS::Attribute::Configurable);
 
diff --git a/Userland/Libraries/LibJS/Runtime/Object.h b/Userland/Libraries/LibJS/Runtime/Object.h
index cea4538d10f..2d01081d45b 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.h
+++ b/Userland/Libraries/LibJS/Runtime/Object.h
@@ -187,6 +187,8 @@ public:
     template<typename T>
     bool fast_is() const = delete;
 
+    void set_prototype(Object*);
+
 protected:
     enum class GlobalObjectTag { Tag };
     enum class ConstructWithoutPrototypeTag { Tag };
@@ -198,8 +200,6 @@ protected:
     Object(ConstructWithPrototypeTag, Object& prototype);
     explicit Object(Shape&);
 
-    void set_prototype(Object*);
-
     // [[Extensible]]
     bool m_is_extensible { true };
 
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
index 8dcbd800938..b734a2304f8 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
@@ -16,10 +16,17 @@
 namespace Web::CSS {
 
 CSSStyleDeclaration::CSSStyleDeclaration(JS::Realm& realm)
-    : PlatformObject(Bindings::ensure_web_prototype<Bindings::CSSStyleDeclarationPrototype>(realm, "CSSStyleDeclaration"))
+    : PlatformObject(realm)
 {
 }
 
+JS::ThrowCompletionOr<void> CSSStyleDeclaration::initialize(JS::Realm& realm)
+{
+    MUST_OR_THROW_OOM(Base::initialize(realm));
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSStyleDeclarationPrototype>(realm, "CSSStyleDeclaration"));
+    return {};
+}
+
 WebIDL::ExceptionOr<JS::NonnullGCPtr<PropertyOwningCSSStyleDeclaration>> PropertyOwningCSSStyleDeclaration::create(JS::Realm& realm, Vector<StyleProperty> properties, HashMap<DeprecatedString, StyleProperty> custom_properties)
 {
     return MUST_OR_THROW_OOM(realm.heap().allocate<PropertyOwningCSSStyleDeclaration>(realm, realm, move(properties), move(custom_properties)));
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
index 6bb10890abe..c349dc4a202 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
@@ -19,6 +19,7 @@ class CSSStyleDeclaration : public Bindings::PlatformObject {
 
 public:
     virtual ~CSSStyleDeclaration() = default;
+    virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
 
     virtual size_t length() const = 0;
     virtual DeprecatedString item(size_t index) const = 0;