diff --git a/core/src/main/java/org/synyx/hera/core/OrderAwarePluginRegistry.java b/core/src/main/java/org/synyx/hera/core/OrderAwarePluginRegistry.java
index e39ba3a..d18b14c 100644
--- a/core/src/main/java/org/synyx/hera/core/OrderAwarePluginRegistry.java
+++ b/core/src/main/java/org/synyx/hera/core/OrderAwarePluginRegistry.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2002-2008 the original author or 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 org.synyx.hera.core;
 
 import java.util.Collections;