diff --git a/platform/lang-impl/src/com/intellij/refactoring/util/RefactoringUIUtil.java b/platform/lang-impl/src/com/intellij/refactoring/util/RefactoringUIUtil.java
index b49618f13939..e64d5faa977d 100644
--- a/platform/lang-impl/src/com/intellij/refactoring/util/RefactoringUIUtil.java
+++ b/platform/lang-impl/src/com/intellij/refactoring/util/RefactoringUIUtil.java
@@ -18,20 +18,25 @@ package com.intellij.refactoring.util;
 
 import com.intellij.codeInsight.lookup.LookupManager;
 import com.intellij.lang.findUsages.DescriptiveNameUtil;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.editor.ex.EditorEx;
 import com.intellij.openapi.editor.ex.FocusChangeListener;
-import com.intellij.ui.EditorSettingsProvider;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.NonNls;
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.ElementDescriptionUtil;
 import com.intellij.openapi.project.Project;
-import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.ui.Messages;
-import com.intellij.util.IncorrectOperationException;
+import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.psi.ElementDescriptionUtil;
+import com.intellij.psi.PsiElement;
 import com.intellij.refactoring.RefactoringBundle;
+import com.intellij.ui.EditorSettingsProvider;
 import com.intellij.usageView.UsageViewUtil;
+import com.intellij.util.Function;
+import com.intellij.util.IncorrectOperationException;
+import com.intellij.util.containers.ContainerUtil;
+import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
 
 /**
  * @author yole
@@ -63,15 +68,10 @@ public class RefactoringUIUtil {
   }
 
   public static String calculatePsiElementDescriptionList(PsiElement[] elements) {
-    StringBuilder buffer = new StringBuilder();
-    for (int i = 0; i < elements.length; i++) {
-      if (i > 0) buffer.append(", ");
-      buffer.append(UsageViewUtil.getType(elements[i]));
-      buffer.append(" ");
-      buffer.append(DescriptiveNameUtil.getDescriptiveName(elements[i]));
-    }
-
-    return buffer.toString();
+    final Function<PsiElement, String> presentationFun = element -> UsageViewUtil.getType(element) +
+                                                                    " " +
+                                                                    DescriptiveNameUtil.getDescriptiveName(element);
+    return StringUtil.join(ContainerUtil.map2LinkedSet(Arrays.asList(elements), presentationFun), ", ");
   }
 
   public static final EditorSettingsProvider SELECT_ALL_ON_FOCUS = new EditorSettingsProvider() {