diff --git a/libraries/AP_AHRS/AP_AHRS_HIL.cpp b/libraries/AP_AHRS/AP_AHRS_HIL.cpp
index 6f263137f9..bcc60a594b 100644
--- a/libraries/AP_AHRS/AP_AHRS_HIL.cpp
+++ b/libraries/AP_AHRS/AP_AHRS_HIL.cpp
@@ -1,14 +1,14 @@
 /*
-	APM_AHRS_HIL.cpp
-
-	Hardware in the loop AHRS object
-
-	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.
-*/
+ *       APM_AHRS_HIL.cpp
+ *
+ *       Hardware in the loop AHRS object
+ *
+ *       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 <FastSerial.h>
 #include <AP_AHRS.h>
@@ -16,15 +16,15 @@
 /**************************************************/
 void
 AP_AHRS_HIL::setHil(float _roll, float _pitch, float _yaw,
-		    float _rollRate, float _pitchRate, float _yawRate)
+                    float _rollRate, float _pitchRate, float _yawRate)
 {
-	roll = _roll;
-	pitch = _pitch;
-	yaw = _yaw;
+    roll = _roll;
+    pitch = _pitch;
+    yaw = _yaw;
 
-	_omega(_rollRate, _pitchRate, _yawRate);
+    _omega(_rollRate, _pitchRate, _yawRate);
 
-	roll_sensor  = ToDeg(roll)*100;
-	pitch_sensor = ToDeg(pitch)*100;
-	yaw_sensor   = ToDeg(yaw)*100;
+    roll_sensor  = ToDeg(roll)*100;
+    pitch_sensor = ToDeg(pitch)*100;
+    yaw_sensor   = ToDeg(yaw)*100;
 }