diff --git a/mk/PX4/ROMFS/init.d/rc.APM b/mk/PX4/ROMFS/init.d/rc.APM
index ea5fc8c317c0c..0b5c4cdba5e53 100755
--- a/mk/PX4/ROMFS/init.d/rc.APM
+++ b/mk/PX4/ROMFS/init.d/rc.APM
@@ -141,7 +141,12 @@ then
         then
             set HAVE_PX4IO true
             # play happy tune again
-            tone_alarm 1
+            if [ -f /etc/tones/startup ]
+            then
+                tone_alarm /etc/tones/startup
+            else
+                tone_alarm 1
+            fi
         fi
     fi
 else
diff --git a/mk/PX4/ROMFS/init.d/rcS b/mk/PX4/ROMFS/init.d/rcS
index 201707f00a7c5..028cd5f75c1b8 100755
--- a/mk/PX4/ROMFS/init.d/rcS
+++ b/mk/PX4/ROMFS/init.d/rcS
@@ -43,7 +43,12 @@ then
     echo "[init] card mounted at /fs/microsd"
     set HAVE_MICROSD 1
     # Start playing the startup tune
-    tone_alarm 1
+    if [ -f /etc/tones/startup ]
+    then
+        tone_alarm /etc/tones/startup
+    else
+        tone_alarm 1
+    fi
 else
     set HAVE_MICROSD 0
     echo "Trying format of microSD"
@@ -55,7 +60,12 @@ else
             then
                 echo "format succeeded"
                 set HAVE_MICROSD 1
-                tone_alarm 1
+                if [ -f /etc/tones/startup ]
+                then
+                    tone_alarm /etc/tones/startup
+                else
+                    tone_alarm 1
+                fi
             else
                 echo "mount failed"
                 tone_alarm MNBG
diff --git a/mk/PX4/ROMFS/tones/startup b/mk/PX4/ROMFS/tones/startup
new file mode 100644
index 0000000000000..0b3c3c3cc2ed0
--- /dev/null
+++ b/mk/PX4/ROMFS/tones/startup
@@ -0,0 +1 @@
+MFT240L8O4aO5dcO4aO5dcO4aO5dcL16dcdcdcdc