diff --git a/CHANGES.md b/CHANGES.md
index 6f08e059..551fecc1 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,7 @@ Check also [MIGRATION.md](MIGRATION.md) for possible compatibility problems.
 
 ### 0.6.2
 
+* [#17] Optimized: `StreamEx.ofTree`, `EntryStream.ofTree`.
 * [#104] Added: `StreamEx.ofReversed()`.
 * [#105] Added: `MoreCollectors.minMax()`.
 
diff --git a/src/test/java/one/util/streamex/StreamExTest.java b/src/test/java/one/util/streamex/StreamExTest.java
index c409bb99..820a9467 100644
--- a/src/test/java/one/util/streamex/StreamExTest.java
+++ b/src/test/java/one/util/streamex/StreamExTest.java
@@ -1046,8 +1046,8 @@ public void testOfTreeClose() {
                 () -> {
                     if (!cn.title.equals("childA"))
                         throw new InternalError(cn.title);
-                })).parallel()) {
-                test.accept(closableTree);
+                }))) {
+                test.accept(closableTree.parallel());
             }
             catch(InternalError ex) {
                 catched = true;