diff --git a/compiler/testData/codegen/box/classes/initializerBlockDImpl.kt b/compiler/testData/codegen/box/classes/initializerBlockDImpl.kt
index 0b40481384b..087f4ab0c54 100644
--- a/compiler/testData/codegen/box/classes/initializerBlockDImpl.kt
+++ b/compiler/testData/codegen/box/classes/initializerBlockDImpl.kt
@@ -1,5 +1,4 @@
-import java.util.*
-
+// WITH_RUNTIME
 class World() {
   public val items: ArrayList<Item> = ArrayList<Item>()
 
diff --git a/compiler/testData/codegen/box/classes/overloadUnaryOperator.kt b/compiler/testData/codegen/box/classes/overloadUnaryOperator.kt
index cf0940b3ecf..5813e80f4c2 100644
--- a/compiler/testData/codegen/box/classes/overloadUnaryOperator.kt
+++ b/compiler/testData/codegen/box/classes/overloadUnaryOperator.kt
@@ -1,7 +1,4 @@
 // WITH_RUNTIME
-
-import java.util.*
-
 class ArrayWrapper<T>() {
     val contents = ArrayList<T>()
 
diff --git a/js/js.translator/testData/box/examples/overloadUnaryOperator.kt b/js/js.translator/testData/box/examples/overloadUnaryOperator.kt
index 7a542ac3ebd..f8d690e75f5 100644
--- a/js/js.translator/testData/box/examples/overloadUnaryOperator.kt
+++ b/js/js.translator/testData/box/examples/overloadUnaryOperator.kt
@@ -9,10 +9,7 @@ class ArrayWrapper<T>() {
     operator fun unaryMinus(): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
-        var i = contents.size;
-        for (a in contents) {
-            result.contents[--i] = a;
-        }
+        result.contents.reverse()
         return result
     }