diff --git a/src/python/scripts/emaneevent-location b/src/python/scripts/emaneevent-location
index 9417e69..1ecb315 100755
--- a/src/python/scripts/emaneevent-location
+++ b/src/python/scripts/emaneevent-location
@@ -44,7 +44,7 @@ usage = """emaneevent-location [OPTION]... NEMID[:NEMID] LATITUDE \\
 
        LONGITUDE := 'longitude'=DEGREES
 
-       ALTITUDE := 'altitude'=MPS
+       ALTITUDE := 'altitude'=M
 
        VELOCITY := 'azimuth'=DEGREES 'elevation'=DEGREES 'magnitude'=MPS
 
@@ -52,6 +52,8 @@ usage = """emaneevent-location [OPTION]... NEMID[:NEMID] LATITUDE \\
 
        DEGREES := degrees (float)
 
+       M := Meters (float)
+
        MPS := Meters/Second (float)
 """