diff --git a/src/main/scala/eu/nomad_lab/parsers/ElkParser.scala b/src/main/scala/eu/nomad_lab/parsers/ElkParser.scala
index 6466c39a2ad0cf8ff991a9b36b061fefd17fcd02..76a944bb4d7afb73cdeb6acf8a89d46d88a6cba5 100644
--- a/src/main/scala/eu/nomad_lab/parsers/ElkParser.scala
+++ b/src/main/scala/eu/nomad_lab/parsers/ElkParser.scala
@@ -1,3 +1,18 @@
+/*
+   Copyright 2016-2017 The NOMAD Developers Group
+
+   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 eu.nomad_lab.parsers
 
 import eu.nomad_lab
diff --git a/src/test/scala/eu/nomad_lab/parsers/ElkParserSpec.scala b/src/test/scala/eu/nomad_lab/parsers/ElkParserSpec.scala
index 4ae21a15e3f8657f84dd2416aa98dfa04cb421e0..9061f2d842bb3877820eaae4422a2c2d950c436a 100644
--- a/src/test/scala/eu/nomad_lab/parsers/ElkParserSpec.scala
+++ b/src/test/scala/eu/nomad_lab/parsers/ElkParserSpec.scala
@@ -1,3 +1,18 @@
+/*
+   Copyright 2016-2017 The NOMAD Developers Group
+
+   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 eu.nomad_lab.parsers
 
 import org.specs2.mutable.Specification