Index: Accel.c
===================================================================
diff -u -r952b321061e5bd9a0394c7344e4980759912d80a -r0a362a5255a4c923b58ed916f86a6769e7c1292b
--- Accel.c	(.../Accel.c)	(revision 952b321061e5bd9a0394c7344e4980759912d80a)
+++ Accel.c	(.../Accel.c)	(revision 0a362a5255a4c923b58ed916f86a6769e7c1292b)
@@ -211,9 +211,9 @@
     accelAxes[ ACCEL_AXIS_X ].data = (F32)x * G_PER_LSB + accelCalOffsets[ ACCEL_AXIS_X ];
     accelAxes[ ACCEL_AXIS_Y ].data = (F32)y * G_PER_LSB + accelCalOffsets[ ACCEL_AXIS_Y ];
     accelAxes[ ACCEL_AXIS_Z ].data = (F32)z * G_PER_LSB + accelCalOffsets[ ACCEL_AXIS_Z ];
-    xMax = (F32)xm * G_PER_LSB;
-    yMax = (F32)ym * G_PER_LSB;
-    zMax = (F32)zm * G_PER_LSB;
+    xMax = fabs( (F32)xm * G_PER_LSB );
+    yMax = fabs( (F32)ym * G_PER_LSB );
+    zMax = fabs( (F32)zm * G_PER_LSB );
     if ( xMax > accelMaxs[ ACCEL_AXIS_X ].data )
     {
         accelMaxs[ ACCEL_AXIS_X ].data = xMax;