diff --git a/js/js.translator/testData/box/native/simpleUndefined.kt b/js/js.translator/testData/box/native/simpleUndefined.kt
index dfb3b6ce539..8a9280a7b5d 100644
--- a/js/js.translator/testData/box/native/simpleUndefined.kt
+++ b/js/js.translator/testData/box/native/simpleUndefined.kt
@@ -1,7 +1,8 @@
 // EXPECTED_REACHABLE_NODES: 1281
 package foo
 
-external val c: Any? = definedExternally
+external interface MyAny
+external val c: MyAny? = definedExternally
 
 fun box(): String {
     if (c != null) return "fail1"