diff --git a/posix-configs/SITL/init/rcS b/posix-configs/SITL/init/rcS
index c89714c02c..319cf4214d 100644
--- a/posix-configs/SITL/init/rcS
+++ b/posix-configs/SITL/init/rcS
@@ -7,8 +7,8 @@ dataman start
 mavlink start -u 14556 -r 60000
 simulator start -s
 param set CAL_GYRO0_ID 2293760
-param set CAL_ACC0_ID 1310720
-param set CAL_ACC1_ID 1376256
+param set CAL_ACC0_ID 1376256
+param set CAL_ACC1_ID 1310720
 param set CAL_MAG0_ID 196608
 param set CAL_GYRO0_XOFF 0.01
 param set CAL_ACC0_XOFF 0.01