diff --git a/java/java-psi-impl/src/com/intellij/psi/impl/JavaPsiFacadeImpl.java b/java/java-psi-impl/src/com/intellij/psi/impl/JavaPsiFacadeImpl.java
index 2d939ed05086..9684f1d81dd7 100644
--- a/java/java-psi-impl/src/com/intellij/psi/impl/JavaPsiFacadeImpl.java
+++ b/java/java-psi-impl/src/com/intellij/psi/impl/JavaPsiFacadeImpl.java
@@ -249,7 +249,7 @@ public class JavaPsiFacadeImpl extends JavaPsiFacadeEx {
   }
 
   public PsiPackage[] getSubPackages(PsiPackage psiPackage, GlobalSearchScope scope) {
-    List<PsiPackage> result = new ArrayList<PsiPackage>();
+    LinkedHashSet<PsiPackage> result = new LinkedHashSet<PsiPackage>();
     for (PsiElementFinder finder : filteredFinders()) {
       PsiPackage[] packages = finder.getSubPackages(psiPackage, scope);
       ContainerUtil.addAll(result, packages);