diff --git a/libraries/AP_HAL_ChibiOS/hwdef/NxtPX4v2/defaults.parm b/libraries/AP_HAL_ChibiOS/hwdef/NxtPX4v2/defaults.parm
index eb8fdb8570f188..7bc08c2ca66fd8 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/NxtPX4v2/defaults.parm
+++ b/libraries/AP_HAL_ChibiOS/hwdef/NxtPX4v2/defaults.parm
@@ -3,7 +3,8 @@ BATT_MONITOR 4
 
 #Serial Port defaults
 SERIAL4_PROTOCOL 42
+SERIAL5_PROTOCOL 16
 SERIAL6_PROTOCOL 23
 
 #MSP DisplayPort enable
-OSD_TYPE 5
\ No newline at end of file
+OSD_TYPE 5