diff --git a/ArduPlane/Parameters.pde b/ArduPlane/Parameters.pde
index 602a5d3c47..daf03f670c 100644
--- a/ArduPlane/Parameters.pde
+++ b/ArduPlane/Parameters.pde
@@ -201,7 +201,7 @@ const AP_Param::Info var_info[] PROGMEM = {
     // @DisplayName: Takeoff throttle slew rate
     // @Description: This parameter sets the slew rate for the throttle during auto takeoff. When this is zero the THR_SLEWRATE parameter is used during takeoff. For rolling takeoffs it can be a good idea to set a lower slewrate for takeoff to give a slower acceleration which can improve ground steering control. The value is a percentage throttle change per second, so a value of 20 means to advance the throttle over 5 seconds on takeoff. Values below 20 are not recommended as they may cause the plane to try to climb out with too little throttle.
     // @Units: percent
-    // @Range: 0 100
+    // @Range: 0 127
     // @Increment: 1
     // @User: User
     GSCALAR(takeoff_throttle_slewrate, "TKOFF_THR_SLEW",  0),
@@ -454,7 +454,7 @@ const AP_Param::Info var_info[] PROGMEM = {
     // @DisplayName: Throttle slew rate
     // @Description: maximum percentage change in throttle per second. A setting of 10 means to not change the throttle by more than 10% of the full throttle range in one second.
     // @Units: Percent
-    // @Range: 0 100
+    // @Range: 0 127
     // @Increment: 1
     // @User: Standard
     ASCALAR(throttle_slewrate,      "THR_SLEWRATE",   100),