diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
index 883ef69169..a40aab7e07 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
@@ -4,6 +4,8 @@
 
 include ../fmuv3/hwdef.dat
 
+define HAL_CHIBIOS_ARCH_CUBEBLACK 1
+
 # USB setup
 USB_VENDOR 0x2DAE # ONLY FOR USE BY HEX! NOBODY ELSE
 USB_PRODUCT 0x1011