diff --git a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
index e53cb293f2..38af2615cc 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
@@ -135,6 +135,6 @@ define AP_GRIPPER_ENABLED 0
 
 # SkyViper has a very limited set of blinkenlights
 define AP_NOTIFY_NCP5623_ENABLED 0
-
+define AP_NOTIFY_PCA9685_ENABLED 0
 
 AUTOBUILD_TARGETS Copter