diff --git a/conf/airframes/UofAdelaide/A1000_BOOZ.xml b/conf/airframes/UofAdelaide/A1000_BOOZ.xml
index 19fe65f675..bee3a3fa4a 100644
--- a/conf/airframes/UofAdelaide/A1000_BOOZ.xml
+++ b/conf/airframes/UofAdelaide/A1000_BOOZ.xml
@@ -273,7 +273,7 @@ second attempt
  <firmware name="rotorcraft">
 	<target name="ap" board="booz_1.0">
 	  <param  name="FLASH_MODE" value="IAP"/>   <!-- default for the board but putting it here as example-->
-	  <define name="RADIO_KILL_SWITCH" value="RADIO_CONTROL_SWITCH1"/>
+	  <define name="RADIO_KILL_SWITCH" value="4"/>
 	  <define name="MODEM_BAUD" value = "B57600"/>
 	  <define name="GPS_LAG" value = "0.8"/>
 	  <define name="BOOZ_START_DELAY" value = "3"/>