diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 8599307259..088c362040 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -82,6 +82,9 @@
 #define HAL_INS_RST         21
 #define HAL_INS_LSM9DS1     22
 #define HAL_INS_ICM20789_SPI 23
+#define HAL_INS_INV2_I2C    24
+#define HAL_INS_INV2_SPI    25
+
 
 /* Barometer driver types */
 #define HAL_BARO_NONE        0