diff --git a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
index 7b98f93828..2c47822658 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/JHEMCU-GSF405A/hwdef.dat
@@ -170,3 +170,4 @@ define HAL_NMEA_OUTPUT_ENABLED 0
 define HAL_BUTTON_ENABLED 0
 define HAL_OREO_LED_ENABLED 0
 define HAL_PICCOLO_CAN_ENABLE 0
+define BARO_MAX_INSTANCES 1