diff --git a/ROMFS/px4fmu_common/init.d/rc.mc_defaults b/ROMFS/px4fmu_common/init.d/rc.mc_defaults
index fbc84d7ce5..6f04791f61 100644
--- a/ROMFS/px4fmu_common/init.d/rc.mc_defaults
+++ b/ROMFS/px4fmu_common/init.d/rc.mc_defaults
@@ -7,32 +7,14 @@ then
 	param set NAV_ACC_RAD 2.0
 	param set RTL_RETURN_ALT 30.0
 	param set RTL_DESCEND_ALT 10.0
-	param set PWM_DISARMED 900
 	param set PWM_MIN 1075
 	param set PWM_MAX 1950
 	param set PWM_RATE 400
-	param set PWM_AUX_DISARMED 1500
-	param set PWM_AUX_MIN 1000
-	param set PWM_AUX_MAX 2000
 
 	param set RTL_LAND_DELAY 0
 fi
 
-# tell the mixer to use parameters for these instead
-set PWM_RATE p:PWM_RATE
-set PWM_DISARMED p:PWM_DISARMED
-set PWM_MIN p:PWM_MIN
-set PWM_MAX p:PWM_MAX
-set PWM_AUX_DISARMED p:PWM_AUX_DISARMED
-set PWM_AUX_MIN p:PWM_AUX_MIN
-set PWM_AUX_MAX p:PWM_AUX_MAX
-
 # This is the gimbal pass mixer
 set MIXER_AUX pass
 set PWM_AUX_RATE 50
 set PWM_AUX_OUT 1234
-
-if param compare PWM_DISARMED 0
-then
-	param set PWM_DISARMED 900
-fi