diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index 81754e7020e..bd84ad92f0d 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -120,7 +120,8 @@ static bool is_javascript_builtin(Type const& type)
         "ArrayBuffer"sv,
         "Float32Array"sv,
         "Float64Array"sv,
-        "Uint8Array"sv
+        "Uint8Array"sv,
+        "Uint8ClampedArray"sv,
     };
 
     return types.span().contains_slow(type.name());
@@ -692,7 +693,7 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
     auto @cpp_name@ = JS::make_handle(TRY(@js_name@@js_suffix@.to_object(vm)));
 )~~~");
         }
-    } else if (parameter.type->name().is_one_of("BufferSource", "Float32Array", "Float64Array", "Uint8Array", "Uint8ClampedArray")) {
+    } else if (is_javascript_builtin(parameter.type) || parameter.type->name() == "BufferSource"sv) {
         if (optional) {
             scoped_generator.append(R"~~~(
     Optional<JS::Handle<WebIDL::BufferSource>> @cpp_name@;