diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CubeOrange/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CubeOrange/hwdef.dat
index bd4fee579b..bdab8d5073 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CubeOrange/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CubeOrange/hwdef.dat
@@ -1,5 +1,7 @@
 # hw definition file for processing by chibios_hwdef.py
 
+define HAL_CHIBIOS_ARCH_CUBE 1
+
 # USB setup
 USB_VENDOR 0x2DAE # ONLY FOR USE BY HEX! NOBODY ELSE
 USB_PRODUCT 0x1016