diff --git a/airframes/18.04/4000_spiri b/airframes/18.04/4000_spiri
index 81ad67a..60c0c1f 100644
--- a/airframes/18.04/4000_spiri
+++ b/airframes/18.04/4000_spiri
@@ -20,6 +20,8 @@ param set-default MPC_Z_VEL_MAX_UP 1.0
 param set EKF2_AID_MASK 1
 param set EKF2_HGT_MODE 0
 param set SYS_FAILURE_EN 0
+param set NAV_RCL_ACT 0
+param set NAV_DLL_ACT 0
 
 set MIXER quad_x
 set PWM_OUT 1234