diff --git a/ArduCopter/radio.cpp b/ArduCopter/radio.cpp
index 589c16d572..5fe6d16e51 100644
--- a/ArduCopter/radio.cpp
+++ b/ArduCopter/radio.cpp
@@ -182,5 +182,8 @@ void Copter::set_throttle_zero_flag(int16_t throttle_control)
 // pass pilot's inputs to motors library (used to allow wiggling servos while disarmed on heli, single, coax copters)
 void Copter::radio_passthrough_to_motors()
 {
-    motors->set_radio_passthrough(channel_roll->norm_input(), channel_pitch->norm_input(), channel_throttle->norm_input(), channel_yaw->norm_input());
+    motors->set_radio_passthrough(channel_roll->norm_input(),
+                                  channel_pitch->norm_input(),
+                                  channel_throttle->get_control_in_zero_dz()*0.001,
+                                  channel_yaw->norm_input());
 }