diff --git a/platform/platform-api/src/com/intellij/openapi/vfs/newvfs/FileAttribute.java b/platform/platform-api/src/com/intellij/openapi/vfs/newvfs/FileAttribute.java
index 3277cfb920e1..fd447ae29a3c 100644
--- a/platform/platform-api/src/com/intellij/openapi/vfs/newvfs/FileAttribute.java
+++ b/platform/platform-api/src/com/intellij/openapi/vfs/newvfs/FileAttribute.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2015 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,7 +21,7 @@ package com.intellij.openapi.vfs.newvfs;
 
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.vfs.VirtualFile;
-import gnu.trove.THashSet;
+import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -32,7 +32,7 @@ import java.io.IOException;
 import java.util.Set;
 
 public class FileAttribute {
-  private static final Set<String> ourRegisteredIds = new THashSet<String>();
+  private static final Set<String> ourRegisteredIds = ContainerUtil.newConcurrentSet();
   private static final int UNDEFINED_VERSION = -1;
   private final String myId;
   private final int myVersion;