diff --git a/libraries/AP_Motors/AP_MotorsCoax.cpp b/libraries/AP_Motors/AP_MotorsCoax.cpp
index 93d7bd78ee..d0cf7ace4b 100644
--- a/libraries/AP_Motors/AP_MotorsCoax.cpp
+++ b/libraries/AP_Motors/AP_MotorsCoax.cpp
@@ -13,12 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsSingle.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
-
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Math/AP_Math.h>
 #include "AP_MotorsCoax.h"
diff --git a/libraries/AP_Motors/AP_MotorsHeli.cpp b/libraries/AP_Motors/AP_MotorsHeli.cpp
index a2b42fde66..c1a838bfaa 100644
--- a/libraries/AP_Motors/AP_MotorsHeli.cpp
+++ b/libraries/AP_Motors/AP_MotorsHeli.cpp
@@ -13,11 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsHeli.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
 #include <stdlib.h>
 #include <AP_HAL/AP_HAL.h>
 #include "AP_MotorsHeli.h"
diff --git a/libraries/AP_Motors/AP_MotorsMatrix.cpp b/libraries/AP_Motors/AP_MotorsMatrix.cpp
index f20bb576a3..5998125188 100644
--- a/libraries/AP_Motors/AP_MotorsMatrix.cpp
+++ b/libraries/AP_Motors/AP_MotorsMatrix.cpp
@@ -13,11 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsMatrix.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
 #include <AP_HAL/AP_HAL.h>
 #include "AP_MotorsMatrix.h"
 
diff --git a/libraries/AP_Motors/AP_MotorsMulticopter.cpp b/libraries/AP_Motors/AP_MotorsMulticopter.cpp
index ed94331e1c..4d82ada853 100644
--- a/libraries/AP_Motors/AP_MotorsMulticopter.cpp
+++ b/libraries/AP_Motors/AP_MotorsMulticopter.cpp
@@ -13,12 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsMulticopter.cpp - ArduCopter multicopter motors library
- *       Code by Randy Mackay and Robert Lefebvre. DIYDrones.com
- *
- */
-
 #include "AP_MotorsMulticopter.h"
 #include <AP_HAL/AP_HAL.h>
 #include <AP_BattMonitor/AP_BattMonitor.h>
diff --git a/libraries/AP_Motors/AP_MotorsSingle.cpp b/libraries/AP_Motors/AP_MotorsSingle.cpp
index ea67ee1efe..bdcc91bc71 100644
--- a/libraries/AP_Motors/AP_MotorsSingle.cpp
+++ b/libraries/AP_Motors/AP_MotorsSingle.cpp
@@ -13,12 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsSingle.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
-
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Math/AP_Math.h>
 #include "AP_MotorsSingle.h"
diff --git a/libraries/AP_Motors/AP_MotorsTri.cpp b/libraries/AP_Motors/AP_MotorsTri.cpp
index 871a84d477..fc62958f7c 100644
--- a/libraries/AP_Motors/AP_MotorsTri.cpp
+++ b/libraries/AP_Motors/AP_MotorsTri.cpp
@@ -13,11 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_MotorsTri.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Math/AP_Math.h>
 #include <GCS_MAVLink/GCS.h>
diff --git a/libraries/AP_Motors/AP_Motors_Class.cpp b/libraries/AP_Motors/AP_Motors_Class.cpp
index 0987817b9b..db834fb9f7 100644
--- a/libraries/AP_Motors/AP_Motors_Class.cpp
+++ b/libraries/AP_Motors/AP_Motors_Class.cpp
@@ -13,12 +13,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- *       AP_Motors.cpp - ArduCopter motors library
- *       Code by RandyMackay. DIYDrones.com
- *
- */
-
 #include "AP_Motors_Class.h"
 #include <AP_HAL/AP_HAL.h>
 #include <SRV_Channel/SRV_Channel.h>