diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index fdd22d92ec..a1159c0adc 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -699,7 +699,7 @@
  # define THROTTLE_ACCEL_D      0.0f
 #endif
 #ifndef THROTTLE_ACCEL_IMAX
- # define THROTTLE_ACCEL_IMAX   500
+ # define THROTTLE_ACCEL_IMAX   800
 #endif
 
 // default maximum vertical velocity and acceleration the pilot may request