diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsEmpty.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsEmpty.kt
similarity index 100%
rename from js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsEmpty.java
rename to js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsEmpty.kt