diff --git a/transpiler/javatests/com/google/j2cl/readable/java/jsenum/BUILD b/transpiler/javatests/com/google/j2cl/readable/java/jsenum/BUILD
index 9666eaf584..31e84e4f4f 100644
--- a/transpiler/javatests/com/google/j2cl/readable/java/jsenum/BUILD
+++ b/transpiler/javatests/com/google/j2cl/readable/java/jsenum/BUILD
@@ -10,8 +10,6 @@ readable_example(
         "*.java",
         "*.native.js",
     ]),
-    # TODO(b/204593842): [J2KT] Figure out how to deal with JS native types
-    build_kt_readables = False,
     generate_wasm_readables = False,
     deps = ["//third_party:gwt-jsinterop-annotations-j2cl"],
 )
diff --git a/transpiler/javatests/com/google/j2cl/readable/java/jsenum/output_kt/Main.kt.txt b/transpiler/javatests/com/google/j2cl/readable/java/jsenum/output_kt/Main.kt.txt
index cacc0cc5d1..36f0081af4 100644
--- a/transpiler/javatests/com/google/j2cl/readable/java/jsenum/output_kt/Main.kt.txt
+++ b/transpiler/javatests/com/google/j2cl/readable/java/jsenum/output_kt/Main.kt.txt
@@ -85,7 +85,7 @@ open class Main {
 
   @JvmStatic
   fun boxingWithGenerics() {
-   Main.Foo<Any?>(Optional.of<Main.IntJsEnum?>(Main.IntJsEnum.MINUSONE))
+   Main.Foo<Any?>(Optional.of<Main.IntJsEnum>(Main.IntJsEnum.MINUSONE) as Optional<Main.IntJsEnum>?)
   }
  }
 
@@ -164,6 +164,6 @@ open class Main {
  }
 
  open class Foo<T> {
-  constructor(c: Optional<Main.IntJsEnum?>?)
+  constructor(c: Optional<Main.IntJsEnum>?)
  }
 }