diff --git a/libraries/AP_Airspeed/AP_Airspeed.cpp b/libraries/AP_Airspeed/AP_Airspeed.cpp
index 397c5d1d6e..e8991ca98f 100644
--- a/libraries/AP_Airspeed/AP_Airspeed.cpp
+++ b/libraries/AP_Airspeed/AP_Airspeed.cpp
@@ -157,7 +157,7 @@ const AP_Param::GroupInfo AP_Airspeed::var_info[] = {
     
     // @Param: _OFF_PCNT
     // @DisplayName: Maximum offset cal speed error 
-    // @Description: The maximum percentage speed change in airspeed reports that is allowed due to offset changes between calibrations before a warning is issued. This potential speed error is in percent of ASPD_FBW_MIN. 0 disables. Helps warn of calibrations without pitot being covered.
+    // @Description: The maximum percentage speed change in airspeed reports that is allowed due to offset changes between calibrations before a warning is issued. This potential speed error is in percent of AIRSPEED_MIN. 0 disables. Helps warn of calibrations without pitot being covered.
     // @Range: 0.0 10.0
     // @Units: %
     // @User: Advanced