diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/chibios_hwdef.py b/libraries/AP_HAL_ChibiOS/hwdef/scripts/chibios_hwdef.py
index bba02f8315..8d6ec23f37 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/chibios_hwdef.py
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/chibios_hwdef.py
@@ -2916,6 +2916,8 @@ def add_apperiph_defaults(f):
 #define AP_RANGEFINDER_HC_SR04_ENABLED 0
 #define AP_RANGEFINDER_PWM_ENABLED 0
 
+// no CAN manager in AP_Periph:
+#define HAL_CANMANAGER_ENABLED 0
 ''')
 
 def add_bootloader_defaults(f):