diff --git a/libraries/AP_ADC/AP_ADC.cpp b/libraries/AP_ADC/AP_ADC.cpp
index dff8c08a40..2e249462fc 100644
--- a/libraries/AP_ADC/AP_ADC.cpp
+++ b/libraries/AP_ADC/AP_ADC.cpp
@@ -1,11 +1,11 @@
 /*
-	ADC.cpp - Analog Digital Converter Base Class for Ardupilot Mega
-	Code by James Goppert. DIYDrones.com
-
-	This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) any later version.
-*/
+ *       ADC.cpp - Analog Digital Converter Base Class for Ardupilot Mega
+ *       Code by James Goppert. DIYDrones.com
+ *
+ *       This library is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU Lesser General Public
+ *   License as published by the Free Software Foundation; either
+ *   version 2.1 of the License, or (at your option) any later version.
+ */
 
 #include "AP_ADC.h"