diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_bootloader.h b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_bootloader.h
index c3d8aa22c2..205a200230 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_bootloader.h
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_bootloader.h
@@ -15,11 +15,6 @@
 #define HAL_GCS_ENABLED 0
 #endif
 
-// by default bootloaders don't use INS:
-#ifndef AP_INERTIALSENSOR_ENABLED
-#define AP_INERTIALSENSOR_ENABLED 0
-#endif
-
 #define HAL_MAX_CAN_PROTOCOL_DRIVERS 0
 
 // bootloader does not save temperature cals etc:
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
index 68d9a89148..9240bf000a 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/defaults_periph.h
@@ -266,9 +266,12 @@
 #define RANGEFINDER_MAX_INSTANCES 1
 #endif
 
-// by default AP_Periphs don't use INS:
-#ifndef AP_INERTIALSENSOR_ENABLED
-#define AP_INERTIALSENSOR_ENABLED 0
+#ifndef HAL_ADSB_ENABLED
+#define HAL_ADSB_ENABLED 0
+#endif
+
+#ifndef AP_AIS_ENABLED
+#define AP_AIS_ENABLED 0
 #endif
 
 // no fence by default in AP_Periph:
@@ -347,6 +350,7 @@
 #define AP_RCPROTOCOL_ENABLED defined(HAL_PERIPH_ENABLE_RCIN)
 #define AP_RTC_ENABLED defined(HAL_PERIPH_ENABLE_RTC)
 #define HAL_VISUALODOM_ENABLED defined(HAL_PERIPH_ENABLE_VISUALODOM)
+#define AP_INERTIALSENSOR_ENABLED defined(HAL_PERIPH_ENABLE_IMU)
 
 #ifndef AP_BOOTLOADER_ALWAYS_ERASE
 #define AP_BOOTLOADER_ALWAYS_ERASE 1