diff --git a/usr.sbin/slstat/slstat.8 b/usr.sbin/slstat/slstat.8
index e7d87192abc6..5b45a662f19d 100644
--- a/usr.sbin/slstat/slstat.8
+++ b/usr.sbin/slstat/slstat.8
@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"	From: @(#)slstat.8	6.8 (Berkeley) 6/20/91
-.\"	$Id$
+.\"	$Id: slstat.8,v 1.10 1997/02/22 16:13:33 peter Exp $
 .\"
 .Dd October 11, 1996
 .Dt SLSTAT 8
@@ -45,7 +45,7 @@
 .Op Ar unit
 .Sh DESCRIPTION
 The
-.Nm slstat
+.Nm
 utility
 reports certain kernel statistics kept about serial line internet
 protocol traffic.
diff --git a/usr.sbin/slstat/slstat.c b/usr.sbin/slstat/slstat.c
index 1d07faf387a8..38814214785f 100644
--- a/usr.sbin/slstat/slstat.c
+++ b/usr.sbin/slstat/slstat.c
@@ -23,7 +23,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-	"$Id$";
+	"$Id: slstat.c,v 1.11 1997/02/22 16:13:34 peter Exp $";
 #endif
 
 #include <sys/param.h>
@@ -53,7 +53,7 @@ static const char rcsid[] =
 #include <net/slcompress.h>
 #include <net/if_slvar.h>
 
-static	void usage __P((const char *argv0));
+static	void usage __P((void));
 static	void intpr __P((void));
 static	void catchalarm __P((int));
 
@@ -88,10 +88,10 @@ main(argc, argv)
 		case 'i':
 			interval = atoi(optarg);
 			if (interval <= 0)
-				usage(argv[0]);
+				usage();
 			break;
 		default:
-			usage(argv[0]);
+			usage();
 		}
 	}
 	if (optind >= argc)
@@ -99,14 +99,14 @@ main(argc, argv)
 	else if (isdigit(argv[optind][0])) {
 		unit = atoi(argv[optind]);
 		if (unit < 0)
-			usage(argv[0]);
+			usage();
 		sprintf(interface, INTERFACE_PREFIX, unit);
 	} else if (strncmp(argv[optind], "sl", 2) == 0
 		  && isdigit(argv[optind][2])
 		  && sscanf(argv[optind], "sl%d", &unit) == 1) {
 		strncpy(interface, argv[optind], IFNAMSIZ);
 	} else
-		usage(argv[0]);
+		usage();
 
 	name[0] = CTL_NET;
 	name[1] = PF_LINK;
@@ -145,10 +145,9 @@ main(argc, argv)
 #define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
 
 static void
-usage(argv0)
-	const char *argv0;
+usage()
 {
-	fprintf(stderr, "usage: %s [-i interval] [-vr] [unit]\n", argv0);
+	fprintf(stderr, "usage: slstat [-i interval] [-vr] [unit]\n");
 	exit(1);
 }