diff --git a/Tools/autotest/ArduPlane.parm b/Tools/autotest/ArduPlane.parm
index 093a306bea..80b1023365 100644
--- a/Tools/autotest/ArduPlane.parm
+++ b/Tools/autotest/ArduPlane.parm
@@ -54,4 +54,4 @@ RLL2SRV_P       0.8
 XTRK_ANGLE_CD   500
 XTRK_GAIN_SC    25
 WP_LOITER_RAD   90
-YW2SRV_P        0.5
+YW2SRV_P        1.0