diff --git a/src/main/java/net/openhft/chronicle/hash/AbstractData.java b/src/main/java/net/openhft/chronicle/hash/AbstractData.java
index f82a73ef8..bf8223758 100644
--- a/src/main/java/net/openhft/chronicle/hash/AbstractData.java
+++ b/src/main/java/net/openhft/chronicle/hash/AbstractData.java
@@ -1,4 +1,19 @@
-/*  * Copyright 2012-2018 Chronicle Map Contributors  *  * 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.  */
+/*
+ * Copyright 2012-2018 Chronicle Map Contributors
+ * Copyright 2010 The Guava 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 net.openhft.chronicle.hash;