diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
index ea3d160f3b..2a693ffd0b 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
@@ -55,9 +55,10 @@ PE12 LED_SAFETY OUTPUT
 PE10 SAFETY_IN INPUT PULLDOWN
 
 # extra LEDs, active low, used using the pixracer LED scheme
-PH10 LED_R OUTPUT HIGH GPIO(0)
-PH11 LED_G OUTPUT HIGH GPIO(1)
-PH12 LED_B OUTPUT HIGH GPIO(2)
+# must be opendrain as supply for LEDs is 5V
+PH10 LED_R1 OUTPUT OPENDRAIN HIGH GPIO(0)
+PH11 LED_G1 OUTPUT OPENDRAIN HIGH GPIO(1)
+PH12 LED_B1 OUTPUT OPENDRAIN HIGH GPIO(2)
 
 undef HAL_GPIO_A_LED_PIN
 undef HAL_GPIO_B_LED_PIN