diff --git a/Tools/autotest/param_metadata/param.py b/Tools/autotest/param_metadata/param.py
index 818a0f9b97..ec7bea2176 100644
--- a/Tools/autotest/param_metadata/param.py
+++ b/Tools/autotest/param_metadata/param.py
@@ -127,10 +127,12 @@ known_units = {
              'gravities': 'standard acceleration due to gravity' , # g_n would be a more correct unit, but IMHO no one understands what g_n means
              'octal'   : 'octal'                 ,
              'RPM'     : 'Revolutions Per Minute',
+             'kg'      : 'kilograms',
              'kg/m/m'  : 'kilograms per square meter', # metre is the SI unit name, meter is the american spelling of it
              'kg/m/m/m': 'kilograms per cubic meter',
              'litres'  : 'litres',
              'Ohm'     : 'Ohm',
+             'N'       : 'Newtons',
              }
 
 required_param_fields = [