diff --git a/ArduCopter/control_acro.cpp b/ArduCopter/control_acro.cpp
index c4d9e01889..d7e3802c61 100644
--- a/ArduCopter/control_acro.cpp
+++ b/ArduCopter/control_acro.cpp
@@ -125,7 +125,7 @@ void Copter::get_pilot_desired_angle_rates(int16_t roll_in, int16_t pitch_in, in
         }
 
         // convert earth-frame level rates to body-frame level rates
-        attitude_control.frame_conversion_ef_to_bf(rate_ef_level, rate_bf_level);
+        attitude_control.euler_derivative_to_ang_vel(attitude_control.angle_ef_targets()*radians(0.01f), rate_ef_level, rate_bf_level);
 
         // combine earth frame rate corrections with rate requests
         if (g.acro_trainer == ACRO_TRAINER_LIMITED) {