diff --git a/plc4j/utils/subscription-emulation/src/test/resources/logback-test.xml b/plc4j/utils/subscription-emulation/src/test/resources/logback-test.xml
index ae7fbb5130..84d5e87102 100644
--- a/plc4j/utils/subscription-emulation/src/test/resources/logback-test.xml
+++ b/plc4j/utils/subscription-emulation/src/test/resources/logback-test.xml
@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+      https://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.
+  -->
 <configuration>
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>