diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 5ea303fda4aa678b1235c7176a30697a057886e1..e9adb179c99c6d415b1cb893c49b3baafe0865dd 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -1,6 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduCopter V3.1.5-rc1"
+#define THISFIRMWARE "ArduCopter V3.1.5-rc2"
 /*
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by