diff --git a/ArduCopter/motors.pde b/ArduCopter/motors.pde
index 03f1c0a7b6..b7b2b2db4e 100644
--- a/ArduCopter/motors.pde
+++ b/ArduCopter/motors.pde
@@ -303,7 +303,7 @@ static void pre_arm_checks(bool display_failure)
     }
 #endif
 
-#if CONFIG_HAL_BOARD != HAL_BOARD_PX4
+#ifndef CONFIG_ARCH_BOARD_PX4FMU_V1
     // check board voltage
     if(board_voltage() < BOARD_VOLTAGE_MIN || board_voltage() > BOARD_VOLTAGE_MAX) {
         if (display_failure) {