diff --git a/libraries/AP_Notify/AP_Notify.h b/libraries/AP_Notify/AP_Notify.h
index 4bcf8b6678..63f53531ba 100644
--- a/libraries/AP_Notify/AP_Notify.h
+++ b/libraries/AP_Notify/AP_Notify.h
@@ -57,7 +57,6 @@ public:
         uint32_t initialising       : 1;    // 1 if initialising and copter should not be moved
         uint32_t gps_status         : 3;    // 0 = no gps, 1 = no lock, 2 = 2d lock, 3 = 3d lock, 4 = dgps lock, 5 = rtk lock
         uint32_t gps_num_sats       : 6;    // number of sats
-        float    battery_voltage       ;    // battery voltage
         uint32_t flight_mode        : 8;    // flight mode
         uint32_t armed              : 1;    // 0 = disarmed, 1 = armed
         uint32_t pre_arm_check      : 1;    // 0 = failing checks, 1 = passed
@@ -71,6 +70,7 @@ public:
         uint32_t autopilot_mode     : 1;    // 1 if vehicle is in an autopilot flight mode (only used by OreoLEDs)
         uint32_t firmware_update    : 1;    // 1 just before vehicle firmware is updated
         uint32_t compass_cal_running: 1;    // 1 if a compass calibration is running
+        float    battery_voltage       ;    // battery voltage
 
         // additional flags
         uint32_t external_leds      : 1;    // 1 if external LEDs are enabled (normally only used for copter)