diff --git a/ArduCopter/Attitude.pde b/ArduCopter/Attitude.pde
index c52e782114..c99cdb0259 100644
--- a/ArduCopter/Attitude.pde
+++ b/ArduCopter/Attitude.pde
@@ -187,10 +187,10 @@ get_nav_throttle(int32_t z_error)
 	output =  constrain((int)g.pi_throttle.get_p(rate_error), -160, 180);
 
 	// a positive climb rate means we're going up
-	rate_d =  ((rate_d + climb_rate)>>1) * .1; // replace with gain
+	//rate_d =  ((rate_d + climb_rate)>>1) * .1; // replace with gain
 
 	// slight adjustment to alt hold output
-	output -= constrain(rate_d, -25, 25);
+	//output -= constrain(rate_d, -25, 25);
 
 	// light filter of output
 	output = (old_output * 3 + output) / 4;