diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 94cd9d7a87..4855e14eb4 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -106,6 +106,7 @@
 #define HAL_COMPASS_NAVIO              15
 #define HAL_COMPASS_AERO               16
 #define HAL_COMPASS_OCPOC_ZYNQ         17
+#define HAL_COMPASS_EDGE               18
 
 /* Heat Types */
 #define HAL_LINUX_HEAT_PWM 1
diff --git a/libraries/AP_HAL/board/linux.h b/libraries/AP_HAL/board/linux.h
index 31c40f027e..e0e1c35845 100644
--- a/libraries/AP_HAL/board/linux.h
+++ b/libraries/AP_HAL/board/linux.h
@@ -340,7 +340,9 @@
 #define HAL_INS_MPU60x0_NAME_EXT "mpu60x0ext"
 #define HAL_BARO_DEFAULT HAL_BARO_MS5611_SPI
 #define HAL_BARO_MS5611_NAME "ms5611"
-#define HAL_COMPASS_DEFAULT HAL_COMPASS_HIL
+#define HAL_COMPASS_HMC5843_I2C_BUS 1
+#define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E
+#define HAL_COMPASS_DEFAULT HAL_COMPASS_EDGE
 /* HMC5843 can be an external compass */
 #define HAL_COMPASS_HMC5843_I2C_BUS 1
 #define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E