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 facff22da..937133985 100644
--- a/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
+++ b/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
@@ -142,10 +142,9 @@ public class EventListenerSupportTest {
 
         //serialize:
         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream);
-
-        objectOutputStream.writeObject(listenerSupport);
-        objectOutputStream.close();
+        try (final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) {
+            objectOutputStream.writeObject(listenerSupport);
+        }
 
         //deserialize:
         @SuppressWarnings("unchecked")