diff --git a/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef-bl.dat b/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef-bl.dat
index d50ac0e6aa..6c3b41dc14 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef-bl.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef-bl.dat
@@ -1,6 +1,6 @@
 include ../f303-periph/hwdef-bl.dat
 
-# start with a fixed node ID so the board is usable without DNA
-define HAL_CAN_DEFAULT_NODE_ID 117
+# start as DNA
+define HAL_CAN_DEFAULT_NODE_ID 0
 
 define CAN_APP_NODE_NAME "org.ardupilot.mro_m10025"
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef.dat
index 83a3a98aa1..03c35c9709 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/f303-M10025/hwdef.dat
@@ -1,7 +1,7 @@
 include ../f303-periph/hwdef.dat
 
-# start with a fixed node ID so the board is usable without DNA
-define HAL_CAN_DEFAULT_NODE_ID 117
+# start as DNA
+define HAL_CAN_DEFAULT_NODE_ID 0
 
 define CAN_APP_NODE_NAME "org.ardupilot.mro_m10025"