diff --git a/streampipes-extensions/streampipes-processors-filters-jvm/src/main/test/org/apache/streampipes/processors/filters/jvm/processor/merge/TestMergeByTimeProcessor.java b/streampipes-extensions/streampipes-processors-filters-jvm/src/main/test/org/apache/streampipes/processors/filters/jvm/processor/merge/TestMergeByTimeProcessor.java
index c1232bf147..fadc94ee5b 100644
--- a/streampipes-extensions/streampipes-processors-filters-jvm/src/main/test/org/apache/streampipes/processors/filters/jvm/processor/merge/TestMergeByTimeProcessor.java
+++ b/streampipes-extensions/streampipes-processors-filters-jvm/src/main/test/org/apache/streampipes/processors/filters/jvm/processor/merge/TestMergeByTimeProcessor.java
@@ -1,3 +1,20 @@
+/*
+ * 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.
+ *
+ */
 package org.apache.streampipes.processors.filters.jvm.processor.merge;
 
 import static org.junit.Assert.assertTrue;