diff --git a/ArduPlane/ArduPlane.pde b/ArduPlane/ArduPlane.pde
index d0c0ac81882f67fce07485d3852955623027b7b0..61fef59a701afd17620cb4bba5798d255a79f5f7 100644
--- a/ArduPlane/ArduPlane.pde
+++ b/ArduPlane/ArduPlane.pde
@@ -1,6 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduPlane V3.1.2beta2"
+#define THISFIRMWARE "ArduPlane V3.1.2beta3"
 /*
    Lead developer: Andrew Tridgell
  
diff --git a/ArduPlane/release-notes.txt b/ArduPlane/release-notes.txt
index 11a8298c929c523586d27327994b12518ba5934b..c519b86126f2a4174df2519613914e1a76d000de 100644
--- a/ArduPlane/release-notes.txt
+++ b/ArduPlane/release-notes.txt
@@ -31,6 +31,7 @@ new features.
  - TECS prevent throttle undershoot after a climb
  - AP_Mount: added lead filter to improve servo gimbals
  - Zynq and NavIO updates
+ - fixed preflight calibration to prevent losing 3D accel cal
 
 
 Release 3.1.1, September 12th 2014