diff --git a/libraries/AP_Vehicle/ModeReason.h b/libraries/AP_Vehicle/ModeReason.h
index a1936d8e455bf0..0c31652780dc5f 100644
--- a/libraries/AP_Vehicle/ModeReason.h
+++ b/libraries/AP_Vehicle/ModeReason.h
@@ -71,4 +71,5 @@ enum class ModeReason : uint8_t {
   MODE_TAKEOFF_FAILSAFE = 51,
   DDS_COMMAND = 52,
   AUX_FUNCTION = 53,
+  FIXED_WING_AUTOLAND = 54,
 };