diff --git a/posix-configs/SITL/init/rcS_jmavsim_iris b/posix-configs/SITL/init/rcS_jmavsim_iris
index ee93b3e5500e393b465dd87aa337648400115caf..c150b7ee9b5c4bb7a5bc0983a2a8d08351960f06 100644
--- a/posix-configs/SITL/init/rcS_jmavsim_iris
+++ b/posix-configs/SITL/init/rcS_jmavsim_iris
@@ -31,6 +31,7 @@ param set SENS_BOARD_ROT 0
 param set SENS_BOARD_X_OFF 0.000001
 param set COM_RC_IN_MODE 1
 param set COM_DL_LOSS_EN 1
+param set COM_DISARM_LAND 3
 param set NAV_ACC_RAD 2.0
 param set RTL_RETURN_ALT 30.0
 param set RTL_DESCEND_ALT 10.0