diff --git a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AbstractFactoryFilterIndex.java b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AbstractFactoryFilterIndex.java
index 272f162..95df931 100644
--- a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AbstractFactoryFilterIndex.java
+++ b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AbstractFactoryFilterIndex.java
@@ -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.
+ */
 package org.apache.felix.dm.impl.index;
 
 import java.util.Arrays;
@@ -10,6 +28,9 @@
 import org.osgi.framework.Constants;
 import org.osgi.framework.ServiceReference;
 
+/**
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
 public abstract class AbstractFactoryFilterIndex {
 
 	protected final Map /* <Long, SortedSet<ServiceReference>> */ m_sidToServiceReferencesMap = new HashMap();
diff --git a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AdapterFilterIndex.java b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AdapterFilterIndex.java
index e212f39..470e6ca 100644
--- a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AdapterFilterIndex.java
+++ b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AdapterFilterIndex.java
@@ -220,5 +220,4 @@
         sb.append("]");
         return sb.toString();
     }
-
 }
diff --git a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AspectFilterIndex.java b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AspectFilterIndex.java
index 6a98bfa..f2e0aca 100644
--- a/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AspectFilterIndex.java
+++ b/dependencymanager/core/src/main/java/org/apache/felix/dm/impl/index/AspectFilterIndex.java
@@ -263,5 +263,4 @@
         sb.append("]");
         return sb.toString();
     }
-
 }