diff --git a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
index b4b538c5a1f..5ed649a05ba 100644
--- a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
+++ b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
@@ -44,6 +44,9 @@ public class Slices {
         }
     };
 
+    private Slices() {
+    }
+
     public interface KeyNormalizer<K> {
 
         KeyNormalizer DO_NOTHING = new KeyNormalizer<Object>() {