diff --git a/sw/airborne/booz/radio_control/booz_radio_control_spektrum_dx7se.h b/sw/airborne/booz/radio_control/booz_radio_control_spektrum_dx7se.h
index 4ce1420b35..f86b23e227 100644
--- a/sw/airborne/booz/radio_control/booz_radio_control_spektrum_dx7se.h
+++ b/sw/airborne/booz/radio_control/booz_radio_control_spektrum_dx7se.h
@@ -29,7 +29,9 @@
 #define RADIO_CONTROL_THROTTLE   1
 #define RADIO_CONTROL_PITCH      2
 #define RADIO_CONTROL_YAW        3
+#define RADIO_CONTROL_AUX3       4
 #define RADIO_CONTROL_MODE       5
+#define RADIO_CONTROL_AUX4       6
 
 #define RC_SPK_SYNC_2 0x12