diff --git a/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/ChangeSetBackedTransactionSynchronization.java b/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/ChangeSetBackedTransactionSynchronization.java
index 13d394f1e..3cc5cd3cc 100644
--- a/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/ChangeSetBackedTransactionSynchronization.java
+++ b/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/ChangeSetBackedTransactionSynchronization.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.springframework.data.crossstore;
 
 import org.apache.commons.logging.Log;
@@ -8,10 +23,8 @@ public class ChangeSetBackedTransactionSynchronization implements TransactionSyn
 
 	protected final Log log = LogFactory.getLog(getClass());
 
-	private ChangeSetPersister<Object> changeSetPersister;
-
-	private ChangeSetBacked entity;
-
+	private final ChangeSetPersister<Object> changeSetPersister;
+	private final ChangeSetBacked entity;
 	private int changeSetTxStatus = -1;
 
 	public ChangeSetBackedTransactionSynchronization(ChangeSetPersister<Object> changeSetPersister, ChangeSetBacked entity) {
diff --git a/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/HashMapChangeSet.java b/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/HashMapChangeSet.java
index 7a88807bd..694cef704 100644
--- a/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/HashMapChangeSet.java
+++ b/spring-data-commons-core/src/main/java/org/springframework/data/crossstore/HashMapChangeSet.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.springframework.data.crossstore;
 
 import java.util.Collections;
@@ -14,7 +29,7 @@ import org.springframework.core.convert.ConversionService;
  */
 public class HashMapChangeSet implements ChangeSet {
 
-	private Map<String, Object> values;
+	private final Map<String, Object> values;
 
 	public HashMapChangeSet(Map<String, Object> values) {
 		this.values = values;