diff --git a/libraries/AP_InertialSensor/AP_InertialSensor.cpp b/libraries/AP_InertialSensor/AP_InertialSensor.cpp
index 5e30a084d6..33cb701942 100644
--- a/libraries/AP_InertialSensor/AP_InertialSensor.cpp
+++ b/libraries/AP_InertialSensor/AP_InertialSensor.cpp
@@ -285,7 +285,7 @@ const AP_Param::GroupInfo AP_InertialSensor::var_info[] = {
     // @Param: STILL_THRESH
     // @DisplayName: Stillness threshold for detecting if we are moving
     // @Description: Threshold to tolerate vibration to determine if vehicle is motionless. This depends on the frame type and if there is a constant vibration due to motors before launch or after landing. Total motionless is about 0.05. Suggested values: Planes/rover use 0.1, multirotors use 1, tradHeli uses 5
-    // @Range: 0.05 to 50
+    // @Range: 0.05 50
     // @User: Advanced
     AP_GROUPINFO("STILL_THRESH", 23, AP_InertialSensor, _still_threshold,  DEFAULT_STILL_THRESH),