diff --git a/boards/px4/fmu-v6xrt/default.px4board b/boards/px4/fmu-v6xrt/default.px4board
index f64b7801e4..395151b8cc 100644
--- a/boards/px4/fmu-v6xrt/default.px4board
+++ b/boards/px4/fmu-v6xrt/default.px4board
@@ -47,6 +47,7 @@ CONFIG_DRIVERS_SAFETY_BUTTON=y
 CONFIG_COMMON_TELEMETRY=y
 CONFIG_DRIVERS_TONE_ALARM=y
 CONFIG_DRIVERS_UAVCAN=y
+CONFIG_BOARD_UAVCAN_INTERFACES=3
 CONFIG_COMMON_UWB=y
 CONFIG_MODULES_AIRSPEED_SELECTOR=y
 CONFIG_MODULES_BATTERY_STATUS=y