diff --git a/src/main/java/org/alfresco/opencmis/CMISUtils.java b/src/main/java/org/alfresco/opencmis/CMISUtils.java
index 3d1738f7c8..28007b8224 100644
--- a/src/main/java/org/alfresco/opencmis/CMISUtils.java
+++ b/src/main/java/org/alfresco/opencmis/CMISUtils.java
@@ -44,8 +44,10 @@ public class CMISUtils
             out.writeObject(source);
             out.flush();
 
-            ObjectInputStream in = new ObjectInputStream(cos.getInputStream());
-            target = (T) in.readObject();
+            try (ObjectInputStream in = new ObjectInputStream(cos.getInputStream()))
+            {
+                target = (T) in.readObject();
+            }
         } catch (Exception e)
         {
             throw new CmisRuntimeException("Object copy failed!", e);