diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 076ce1abda..35d1ea5681 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -158,10 +158,6 @@
 #define HAL_HAVE_IMU_HEATER 0
 #endif
 
-#ifndef HAL_COMPASS_HMC5843_I2C_ADDR
-#define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E
-#endif
-
 #ifndef HAL_NUM_CAN_IFACES
 #define HAL_NUM_CAN_IFACES 0
 #endif