diff --git a/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLogger.java b/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLogger.java
index d467239777..e231b53255 100644
--- a/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLogger.java
+++ b/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLogger.java
@@ -1,5 +1,24 @@
 package org.apache.maven.cli.logging;
 
+/*
+ * 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.
+ */
+
 import org.codehaus.plexus.logging.Logger;
 
 /**
@@ -7,87 +26,109 @@
  * 
  * @author Jason van Zyl
  */
-public class Slf4jLogger implements Logger {
+public class Slf4jLogger
+    implements Logger
+{
 
-  private org.slf4j.Logger logger;
+    private org.slf4j.Logger logger;
 
-  public Slf4jLogger(org.slf4j.Logger logger) {
-    this.logger = logger;
-  }
+    public Slf4jLogger( org.slf4j.Logger logger )
+    {
+        this.logger = logger;
+    }
 
-  public void debug(String message) {
-    logger.debug(message);
-  }
+    public void debug( String message )
+    {
+        logger.debug( message );
+    }
 
-  public void debug(String message, Throwable throwable) {
-    logger.debug(message, throwable);
-  }
+    public void debug( String message, Throwable throwable )
+    {
+        logger.debug( message, throwable );
+    }
 
-  public boolean isDebugEnabled() {
-    return logger.isDebugEnabled();
-  }
+    public boolean isDebugEnabled()
+    {
+        return logger.isDebugEnabled();
+    }
 
-  public void info(String message) {
-    logger.info(message);
-  }
+    public void info( String message )
+    {
+        logger.info( message );
+    }
 
-  public void info(String message, Throwable throwable) {
-    logger.info(message, throwable);
-  }
+    public void info( String message, Throwable throwable )
+    {
+        logger.info( message, throwable );
+    }
 
-  public boolean isInfoEnabled() {
-    return logger.isInfoEnabled();
-  }
+    public boolean isInfoEnabled()
+    {
+        return logger.isInfoEnabled();
+    }
 
-  public void warn(String message) {
-    logger.warn(message);
-  }
+    public void warn( String message )
+    {
+        logger.warn( message );
+    }
 
-  public void warn(String message, Throwable throwable) {
-    logger.warn(message, throwable);
-  }
+    public void warn( String message, Throwable throwable )
+    {
+        logger.warn( message, throwable );
+    }
 
-  public boolean isWarnEnabled() {
-    return logger.isWarnEnabled();
-  }
+    public boolean isWarnEnabled()
+    {
+        return logger.isWarnEnabled();
+    }
 
-  public void error(String message) {
-    logger.error(message);
-  }
+    public void error( String message )
+    {
+        logger.error( message );
+    }
 
-  public void error(String message, Throwable throwable) {
-    logger.error(message, throwable);
-  }
+    public void error( String message, Throwable throwable )
+    {
+        logger.error( message, throwable );
+    }
 
-  public boolean isErrorEnabled() {
-    return logger.isErrorEnabled();
-  }
+    public boolean isErrorEnabled()
+    {
+        return logger.isErrorEnabled();
+    }
 
-  public void fatalError(String message) {
-    logger.error(message);    
-  }
+    public void fatalError( String message )
+    {
+        logger.error( message );
+    }
 
-  public void fatalError(String message, Throwable throwable) {
-    logger.error(message, throwable);
-  }
+    public void fatalError( String message, Throwable throwable )
+    {
+        logger.error( message, throwable );
+    }
 
-  public boolean isFatalErrorEnabled() {
-    return logger.isErrorEnabled();
-  }
+    public boolean isFatalErrorEnabled()
+    {
+        return logger.isErrorEnabled();
+    }
 
-  public int getThreshold() {
-    return 0;
-  }
+    public int getThreshold()
+    {
+        return 0;
+    }
 
-  public void setThreshold(int threshold) {
-  }
+    public void setThreshold( int threshold )
+    {
+    }
 
-  public Logger getChildLogger(String name) {
-    return null;
-  }
+    public Logger getChildLogger( String name )
+    {
+        return null;
+    }
 
-  public String getName() {
-    return logger.getName();
-  }
+    public String getName()
+    {
+        return logger.getName();
+    }
 
 }
diff --git a/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLoggerManager.java b/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLoggerManager.java
index 140eccfb98..0197f5c730 100644
--- a/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLoggerManager.java
+++ b/maven-embedder/src/main/java/org/apache/maven/cli/logging/Slf4jLoggerManager.java
@@ -1,5 +1,24 @@
 package org.apache.maven.cli.logging;
 
+/*
+ * 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.
+ */
+
 import org.codehaus.plexus.logging.Logger;
 import org.codehaus.plexus.logging.LoggerManager;
 import org.slf4j.ILoggerFactory;