diff --git a/js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibTestSupport.java b/js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibTestSupport.java
index f83fd15b155..c8b4d4e0aa6 100644
--- a/js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibTestSupport.java
+++ b/js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibTestSupport.java
@@ -32,11 +32,9 @@ import java.util.EnumSet;
 import java.util.List;
 import java.util.Set;
 
-/**
- */
-public class StdLibTestSupport extends SingleFileTranslationTest {
+abstract class StdLibTestSupport extends SingleFileTranslationTest {
 
-    public StdLibTestSupport() {
+    protected StdLibTestSupport() {
         super("stdlib/");
     }