diff --git a/bds/source/java/ch/systemsx/cisd/bds/handler/MD5ChecksumCalculator.java b/bds/source/java/ch/systemsx/cisd/bds/handler/MD5ChecksumCalculator.java
index 532e6893199c4a455afb71ad1962c1fb6bd34b68..d03f7a0687a608ef9f95bbc6c65535f8fa2bf76e 100644
--- a/bds/source/java/ch/systemsx/cisd/bds/handler/MD5ChecksumCalculator.java
+++ b/bds/source/java/ch/systemsx/cisd/bds/handler/MD5ChecksumCalculator.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2007 ETH Zuerich, CISD
+ *
+ * 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 ch.systemsx.cisd.bds.handler;
 
 import java.io.IOException;