diff --git a/Tools/Frame_params/QuadPlanes/MFE_StriverMini.param b/Tools/Frame_params/QuadPlanes/MFE_StriverMini.param
index 08cb4e0055..68374db27d 100644
--- a/Tools/Frame_params/QuadPlanes/MFE_StriverMini.param
+++ b/Tools/Frame_params/QuadPlanes/MFE_StriverMini.param
@@ -6,7 +6,7 @@ SCALING_SPEED    15
 TECS_CLMB_MAX    3
 TECS_LAND_ARSPD  20
 TKOFF_THR_MAX    85
-TRIM_PITCH_DEG 0.01
+PTCH_TRIM_DEG 0.00
 TRIM_THROTTLE    40
 WP_LOITER_RAD    120
 WP_RADIUS        110
diff --git a/Tools/Frame_params/QuadPlanes/XPlane-Alia.parm b/Tools/Frame_params/QuadPlanes/XPlane-Alia.parm
index b23f1a7f90..1f7fdb8d6c 100644
--- a/Tools/Frame_params/QuadPlanes/XPlane-Alia.parm
+++ b/Tools/Frame_params/QuadPlanes/XPlane-Alia.parm
@@ -15,7 +15,7 @@ TRIM_THROTTLE,60
 GROUND_STEER_ALT,10
 AIRSPEED_CRUISE,52.00
 SCALING_SPEED,60
-TRIM_PITCH_DEG,4
+PTCH_TRIM_DEG,0.04
 RTL_ALTITUDE,250.00
 FLAP_1_PERCNT,50
 FLAP_1_SPEED,30
diff --git a/Tools/Frame_params/SkyWalkerX8.param b/Tools/Frame_params/SkyWalkerX8.param
index 46df0321a4..df292fbbfd 100644
--- a/Tools/Frame_params/SkyWalkerX8.param
+++ b/Tools/Frame_params/SkyWalkerX8.param
@@ -107,7 +107,7 @@ TKOFF_THR_MINSPD,0
 TKOFF_THR_SLEW,100
 AIRSPEED_CRUISE,16.00
 TRIM_AUTO,0
-TRIM_PITCH_DEG,0.00
+PTCH_TRIM_DEG,0.00
 TRIM_RC_AT_START,0
 TRIM_THROTTLE,55
 USE_REV_THRUST,0
diff --git a/Tools/Frame_params/SkyWalkerX8_ReverseThrust.param b/Tools/Frame_params/SkyWalkerX8_ReverseThrust.param
index 43447ff805..7f4c5b5fc5 100644
--- a/Tools/Frame_params/SkyWalkerX8_ReverseThrust.param
+++ b/Tools/Frame_params/SkyWalkerX8_ReverseThrust.param
@@ -107,7 +107,7 @@ TKOFF_THR_MINSPD,0
 TKOFF_THR_SLEW,100
 AIRSPEED_CRUISE,16.00
 TRIM_AUTO,0
-TRIM_PITCH_DEG,0.00
+PTCH_TRIM_DEG,0.00
 TRIM_RC_AT_START,0
 TRIM_THROTTLE,55
 USE_REV_THRUST,2
diff --git a/Tools/autotest/default_params/plane-jsbsim.parm b/Tools/autotest/default_params/plane-jsbsim.parm
index 54419c0552..56dac36754 100644
--- a/Tools/autotest/default_params/plane-jsbsim.parm
+++ b/Tools/autotest/default_params/plane-jsbsim.parm
@@ -2,7 +2,7 @@ EK2_ENABLE      1
 BATT_MONITOR    4
 LOG_BITMASK	65535
 AIRSPEED_CRUISE 22.00
-TRIM_PITCH_DEG 0.00
+PTCH_TRIM_DEG 0.00
 TRIM_THROTTLE   50
 PITCH_LIM_MIN_DEG -20.00
 PITCH_LIM_MAX_DEG 25.00
diff --git a/Tools/autotest/default_params/vee-gull 005.param b/Tools/autotest/default_params/vee-gull 005.param
index a584bb601f..ed9db07113 100644
--- a/Tools/autotest/default_params/vee-gull 005.param	
+++ b/Tools/autotest/default_params/vee-gull 005.param	
@@ -803,7 +803,7 @@ TKOFF_THR_MINSPD,0
 TKOFF_THR_SLEW,0
 AIRSPEED_CRUISE,12.00
 TRIM_AUTO,0
-TRIM_PITCH_DEG,0.00
+PTCH_TRIM_DEG,0.00
 TRIM_RC_AT_START,0
 TRIM_THROTTLE,45
 TUNE_CHAN,0
diff --git a/Tools/autotest/models/plane.parm b/Tools/autotest/models/plane.parm
index 3e54f22391..745ec1c0f0 100644
--- a/Tools/autotest/models/plane.parm
+++ b/Tools/autotest/models/plane.parm
@@ -2,7 +2,7 @@ EK2_ENABLE      1
 BATT_MONITOR    4
 LOG_BITMASK	65535
 AIRSPEED_CRUISE 22.00
-TRIM_PITCH_DEG 0.00
+PTCH_TRIM_DEG 0.00
 TRIM_THROTTLE   50
 PITCH_LIM_MIN_DEG -20.00
 PITCH_LIM_MAX_DEG 25.00