diff --git a/libraries/AP_HAL/board/linux.h b/libraries/AP_HAL/board/linux.h
index 2120c56ff1..fa79cd2512 100644
--- a/libraries/AP_HAL/board/linux.h
+++ b/libraries/AP_HAL/board/linux.h
@@ -311,6 +311,10 @@
 #define HAL_COMPASS_DEFAULT HAL_COMPASS_AERO
 #define HAL_COMPASS_BMM150_I2C_BUS 2
 #define HAL_COMPASS_BMM150_I2C_ADDR 0x12
+#define HAL_COMPASS_IST8310_I2C_BUS 4
+#define HAL_COMPASS_IST8310_I2C_ADDR 0x0E
+#define HAL_COMPASS_HMC5843_I2C_BUS 4
+#define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E
 #define HAL_RCOUTPUT_TAP_DEVICE "/dev/ttyS1"
 #elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DARK
 #define HAL_BOARD_LOG_DIRECTORY "/var/APM/logs"