Fix Checkstyle issue.
diff --git a/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java b/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
index 9371339..09080fe 100644
--- a/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
+++ b/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
@@ -142,7 +142,7 @@ public void testSerialization() throws IOException, ClassNotFoundException, Prop
 
         //serialize:
         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        try (final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) {
+        try (ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) {
             objectOutputStream.writeObject(listenerSupport);
         }