diff --git a/libraries/AP_HAL_ChibiOS/hwdef/BETAFPV-F405/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/BETAFPV-F405/hwdef.dat
index a8818145ffe9b..de96d0800e5f8 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/BETAFPV-F405/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/BETAFPV-F405/hwdef.dat
@@ -142,3 +142,4 @@ define HAL_FRAME_TYPE_DEFAULT 12
 
 
 include ../include/minimize_fpv_osd.inc
+AUTOBUILD_TARGETS Copter
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/FlywooF405S-AIO/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/FlywooF405S-AIO/hwdef.dat
index ee015ec9602c6..bec9a8aab77e8 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/FlywooF405S-AIO/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/FlywooF405S-AIO/hwdef.dat
@@ -152,5 +152,5 @@ define DEFAULT_NTF_LED_TYPES 257
 
 # save some flash space
 include ../include/minimize_fpv_osd.inc
-
+AUTOBUILD_TARGETS Copter
 
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A-RX2/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A-RX2/hwdef.dat
index a53546a5fbb1d..cea7767fd776b 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A-RX2/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A-RX2/hwdef.dat
@@ -26,4 +26,4 @@ PA2 TIM2_CH3 TIM2 PWM(4) GPIO(53) BIDIR
 
 DMA_PRIORITY SPI1* SPI3* TIM1_CH2 TIM2_UP TIM3_UP
 DMA_NOSHARE USART2*
-
+AUTOBUILD_TARGETS Copter
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
index ffa1dff54f78d..58fe5d18983b7 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
@@ -167,4 +167,5 @@ define HAL_BUTTON_ENABLED 0
 define AP_NOTIFY_OREOLED_ENABLED 0
 define HAL_PICCOLO_CAN_ENABLE 0
 define BARO_MAX_INSTANCES 1
+AUTOBUILD_TARGETS Copter
 
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/revo-mini-sd/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/revo-mini-sd/hwdef.dat
index dd252849a6784..6f879c2b14d10 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/revo-mini-sd/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/revo-mini-sd/hwdef.dat
@@ -19,3 +19,4 @@ define HAL_OS_FATFS_IO 1
 
 # disable parachute and sprayer to save flash
 define HAL_PARACHUTE_ENABLED 0
+AUTOBUILD_TARGETS None