diff --git a/secop-webserver b/secop-webserver
index 75d6476..f187b4c 100755
--- a/secop-webserver
+++ b/secop-webserver
@@ -34,11 +34,11 @@ def parseArgv(argv):
                         '--instrument',
                         action='store',
                         help="instrument, if running on an instrument computer\n"
-                        "if the value is HOST, take the host name as instrument name",
+                        "if the value is 'this', take the host name as instrument name",
                         default=None)
     return parser.parse_args(argv)
 
 args = parseArgv(sys.argv[1:])
 
-instrument = None if args.instrument=='main' else args.instrument
+instrument = None if args.instrument=='this' else args.instrument
 server.run(int(args.port), SEHistory(), InfluxGraph, Client, single_instrument=instrument, secop=SecopInteractor)