diff --git a/AntennaTracker/GCS_Mavlink.cpp b/AntennaTracker/GCS_Mavlink.cpp
index 62037c6958..5b8cbf5a44 100644
--- a/AntennaTracker/GCS_Mavlink.cpp
+++ b/AntennaTracker/GCS_Mavlink.cpp
@@ -588,7 +588,7 @@ void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
         uint8_t result = MAV_RESULT_UNSUPPORTED;
         
         // do command
-        send_text_P(SEVERITY_LOW,PSTR("command received: "));
+        send_text_P(MAV_SEVERITY_WARNING,PSTR("command received: "));
         
         switch(packet.command) {
             
@@ -798,7 +798,7 @@ void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
         // check if this is the HOME wp
         if (packet.seq == 0) {
             tracker.set_home(tell_command); // New home in EEPROM
-            send_text_P(SEVERITY_LOW,PSTR("new HOME received"));
+            send_text_P(MAV_SEVERITY_WARNING,PSTR("new HOME received"));
             waypoint_receiving = false;
         }
 
@@ -890,7 +890,7 @@ void Tracker::mavlink_delay_cb()
     }
     if (tnow - last_5s > 5000) {
         last_5s = tnow;
-        gcs_send_text_P(SEVERITY_LOW, PSTR("Initialising APM..."));
+        gcs_send_text_P(MAV_SEVERITY_WARNING, PSTR("Initialising APM..."));
     }
     in_mavlink_delay = false;
 }
@@ -931,7 +931,7 @@ void Tracker::gcs_update(void)
     }
 }
 
-void Tracker::gcs_send_text_P(gcs_severity severity, const prog_char_t *str)
+void Tracker::gcs_send_text_P(MAV_SEVERITY severity, const prog_char_t *str)
 {
     for (uint8_t i=0; i<num_gcs; i++) {
         if (gcs[i].initialised) {
@@ -951,7 +951,7 @@ void Tracker::gcs_send_text_P(gcs_severity severity, const prog_char_t *str)
 void Tracker::gcs_send_text_fmt(const prog_char_t *fmt, ...)
 {
     va_list arg_list;
-    gcs[0].pending_status.severity = (uint8_t)SEVERITY_LOW;
+    gcs[0].pending_status.severity = (uint8_t)MAV_SEVERITY_WARNING;
     va_start(arg_list, fmt);
     hal.util->vsnprintf_P((char *)gcs[0].pending_status.text,
             sizeof(gcs[0].pending_status.text), fmt, arg_list);
diff --git a/AntennaTracker/Tracker.h b/AntennaTracker/Tracker.h
index 226a927c41..bbac65dbf6 100644
--- a/AntennaTracker/Tracker.h
+++ b/AntennaTracker/Tracker.h
@@ -202,7 +202,7 @@ private:
     void gcs_send_message(enum ap_message id);
     void gcs_data_stream_send(void);
     void gcs_update(void);
-    void gcs_send_text_P(gcs_severity severity, const prog_char_t *str);
+    void gcs_send_text_P(MAV_SEVERITY severity, const prog_char_t *str);
     void gcs_retry_deferred(void);
     void load_parameters(void);
     void update_auto(void);
diff --git a/AntennaTracker/sensors.cpp b/AntennaTracker/sensors.cpp
index 9234033631..b6a76d561c 100644
--- a/AntennaTracker/sensors.cpp
+++ b/AntennaTracker/sensors.cpp
@@ -4,9 +4,9 @@
 
 void Tracker::init_barometer(void)
 {
-    gcs_send_text_P(SEVERITY_LOW, PSTR("Calibrating barometer"));    
+    gcs_send_text_P(MAV_SEVERITY_WARNING, PSTR("Calibrating barometer"));    
     barometer.calibrate();
-    gcs_send_text_P(SEVERITY_LOW, PSTR("barometer calibration complete"));
+    gcs_send_text_P(MAV_SEVERITY_WARNING, PSTR("barometer calibration complete"));
 }
 
 // read the barometer and return the updated altitude in meters
diff --git a/AntennaTracker/system.cpp b/AntennaTracker/system.cpp
index faff36e0dc..33f860f23a 100644
--- a/AntennaTracker/system.cpp
+++ b/AntennaTracker/system.cpp
@@ -104,7 +104,7 @@ void Tracker::init_tracker()
 
     init_capabilities();
 
-    gcs_send_text_P(SEVERITY_LOW,PSTR("\nReady to track."));
+    gcs_send_text_P(MAV_SEVERITY_WARNING,PSTR("\nReady to track."));
     hal.scheduler->delay(1000); // Why????
 
     set_mode(AUTO); // tracking