diff --git a/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef.dat
index 41b1efe0d1..a2e5341d84 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef.dat
@@ -130,6 +130,13 @@ PC13 DRDY5_BMI055_GYRO INPUT
 PD10 DRDY6_BMI055_ACC INPUT
 PD15 DRDY7_EXTERNAL1 INPUT
 
+# Control of Spektrum power pin
+PE4 SPEKTRUM_PWR OUTPUT HIGH GPIO(73)
+define HAL_GPIO_SPEKTRUM_PWR 73
+
+# Spektrum Power is Active High
+define HAL_SPEKTRUM_PWR_ENABLED 1
+
 # UARTs
 
 # USART2 is telem1