diff --git a/compiler/testData/codegen/regressions/kt1406.kt b/compiler/testData/codegen/regressions/kt1406.kt
index f66fdff9dff..092b8fb7c24 100644
--- a/compiler/testData/codegen/regressions/kt1406.kt
+++ b/compiler/testData/codegen/regressions/kt1406.kt
@@ -4,6 +4,8 @@ import java.util.Collection
 import java.util.ArrayList
 import java.util.regex.Pattern
 
+import std.util.*
+
 class C{
     public fun foo(){
         val items : Collection<Item> = java.util.Collections.singleton(Item()).sure()