diff --git a/ArduCopterMega/ArduCopterMega.pde b/ArduCopterMega/ArduCopterMega.pde
index d177b26def..f717086450 100644
--- a/ArduCopterMega/ArduCopterMega.pde
+++ b/ArduCopterMega/ArduCopterMega.pde
@@ -126,14 +126,8 @@ static AP_Int8                *flight_modes = &g.flight_mode1;
 	// real sensors
 	AP_ADC_ADS7844          adc;
 	APM_BMP085_Class        barometer;
-	// MAG PROTOCOL
-  #if   MAG_PROTOCOL == MAG_PROTOCOL_5843
     AP_Compass_HMC5843      compass(Parameters::k_param_compass);
-  #elif MAG_PROTOCOL == MAG_PROTOCOL_5883L
-    AP_Compass_HMC5883L      compass(Parameters::k_param_compass);
-  #else
-    #error Unrecognised MAG_PROTOCOL setting.
-  #endif
+
   #ifdef OPTFLOW_ENABLED
     AP_OpticalFlow_ADNS3080 optflow;
   #endif
diff --git a/ArduCopterMega/config.h b/ArduCopterMega/config.h
index a95bac3399..dd4b67d186 100644
--- a/ArduCopterMega/config.h
+++ b/ArduCopterMega/config.h
@@ -202,9 +202,6 @@
 #ifndef MAG_ORIENTATION
 # define MAG_ORIENTATION		AP_COMPASS_COMPONENTS_DOWN_PINS_FORWARD
 #endif
-#ifndef MAG_PROTOCOL
-# define MAG_PROTOCOL  MAG_PROTOCOL_5843  // Default Setting
-#endif
 
 
 //////////////////////////////////////////////////////////////////////////////
diff --git a/ArduCopterMega/defines.h b/ArduCopterMega/defines.h
index 66357f7653..ca0e2cc068 100644
--- a/ArduCopterMega/defines.h
+++ b/ArduCopterMega/defines.h
@@ -9,11 +9,6 @@
 #define SONAR 0
 #define BARO 1
 
-//MAGNETOMETER
-// ----------------------
-#define MAG_PROTOCOL_5843		0
-#define MAG_PROTOCOL_5883L		1
-
 // CH 7 control
 #define DO_SET_HOVER 0
 #define DO_FLIP 1