diff --git a/asterix-aql/src/main/javacc/AQL.html b/asterix-aql/src/main/javacc/AQL.html
index b423f6d..815cdd3 100644
--- a/asterix-aql/src/main/javacc/AQL.html
+++ b/asterix-aql/src/main/javacc/AQL.html
@@ -1,3 +1,21 @@
+<!--
+ ! Licensed to the Apache Software Foundation (ASF) under one
+ ! or more contributor license agreements.  See the NOTICE file
+ ! distributed with this work for additional information
+ ! regarding copyright ownership.  The ASF licenses this file
+ ! to you 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.
+ !-->
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
 <HTML>
 <HEAD>