diff --git a/ArduCopter/APM_Config.h b/ArduCopter/APM_Config.h
index 1c766e182f..ee4f024ed2 100644
--- a/ArduCopter/APM_Config.h
+++ b/ArduCopter/APM_Config.h
@@ -90,3 +90,5 @@
 // #define MOT_7 CH_7
 // #define MOT_8 CH_8
 
+// Enabling this will use the GPS lat/long coordinate to get the compass declination
+//#define AUTOMATIC_DECLINATION ENABLED
\ No newline at end of file
diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index 4813348168..31b7463b60 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -425,6 +425,10 @@
 # define GROUND_START_DELAY		3
 #endif
 
+#ifndef AUTOMATIC_DECLINATION
+	#define AUTOMATIC_DECLINATION DISABLED
+#endif
+
 
 //////////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////
diff --git a/ArduPlane/APM_Config.h b/ArduPlane/APM_Config.h
index 0b40f0e887..146dead877 100644
--- a/ArduPlane/APM_Config.h
+++ b/ArduPlane/APM_Config.h
@@ -39,3 +39,6 @@
 #define AIRSPEED_CRUISE     25
 #define THROTTLE_FAILSAFE   ENABLED
 */
+
+// Enabling this will use the GPS lat/long coordinate to get the compass declination
+//#define AUTOMATIC_DECLINATION ENABLED
diff --git a/ArduPlane/config.h b/ArduPlane/config.h
index 43141cdce6..490fdb0631 100644
--- a/ArduPlane/config.h
+++ b/ArduPlane/config.h
@@ -418,6 +418,9 @@
 # define GROUND_START_DELAY		0
 #endif
 
+#ifndef AUTOMATIC_DECLINATION
+	#define AUTOMATIC_DECLINATION DISABLED
+#endif
 
 //////////////////////////////////////////////////////////////////////////////
 // ENABLE_AIR_START