diff --git a/libraries/AP_HAL_ChibiOS/hwdef/JFB110/defaults.parm b/libraries/AP_HAL_ChibiOS/hwdef/JFB110/defaults.parm
index 285c4f1714..4207e693ce 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/JFB110/defaults.parm
+++ b/libraries/AP_HAL_ChibiOS/hwdef/JFB110/defaults.parm
@@ -1,6 +1,9 @@
 # board setting
 BRD_VBUS_MIN 4.9
 
+# setup SERIAL5 to RCIN
+SERIAL5_PROTOCOL 23
+
 # setup SERIAL6 to SBUS OUT
 SERIAL6_BAUD 100
 SERIAL6_PROTOCOL 15