diff --git a/Tools/autotest/default_params/copter-gimbal.parm b/Tools/autotest/default_params/copter-gimbal.parm
index c6e2c50f13..90d492c864 100644
--- a/Tools/autotest/default_params/copter-gimbal.parm
+++ b/Tools/autotest/default_params/copter-gimbal.parm
@@ -1,5 +1,5 @@
 # copter with simulated 3-axis servo gimbal
-MNT_TYPE 1
+MNT1_TYPE 1
 RC6_OPTION 213
 SERVO5_FUNCTION 8
 SERVO6_FUNCTION 7