diff --git a/usr.bin/printf/Makefile b/usr.bin/printf/Makefile
index 52b20f4d3599..1e57f837a75e 100644
--- a/usr.bin/printf/Makefile
+++ b/usr.bin/printf/Makefile
@@ -1,5 +1,7 @@
+# $FreeBSD$
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 
 PROG=	printf
+WARNS?=	2
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/printf/printf.c b/usr.bin/printf/printf.c
index 897a063fd9ce..37b18f13d50b 100644
--- a/usr.bin/printf/printf.c
+++ b/usr.bin/printf/printf.c
@@ -94,7 +94,7 @@ static int	 getchr __P((void));
 static double	 getdouble __P((void));
 static int	 getint __P((int *));
 static int	 getquad __P((quad_t *));
-static char	*getstr __P((void));
+static const char	*getstr __P((void));
 static char	*mklong __P((char *, int));
 static void	 usage __P((void));
 
@@ -109,7 +109,7 @@ main(argc, argv)
 	int argc;
 	char *argv[];
 {
-	static char *skip1, *skip2;
+	static const char *skip1, *skip2;
 	int ch, end, fieldwidth, precision;
 	char convch, nextch, *format, *fmt, *start;
 
@@ -217,7 +217,7 @@ next:		for (start = fmt;; ++fmt) {
 			break;
 		}
 		case 's': {
-			char *p;
+			const char *p;
 
 			p = getstr();
 			PF(start, p);
@@ -349,7 +349,7 @@ getchr()
 	return ((int)**gargv++);
 }
 
-static char *
+static const char *
 getstr()
 {
 	if (!*gargv)
@@ -357,7 +357,7 @@ getstr()
 	return (*gargv++);
 }
 
-static char *Number = "+-.0123456789";
+static const char *Number = "+-.0123456789";
 static int
 getint(ip)
 	int *ip;
diff --git a/usr.bin/renice/Makefile b/usr.bin/renice/Makefile
index d5471379fe1e..ec4d739bf1e9 100644
--- a/usr.bin/renice/Makefile
+++ b/usr.bin/renice/Makefile
@@ -3,5 +3,6 @@
 
 PROG=	renice
 MAN=	renice.8
+WARNS?=	2
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/renice/renice.c b/usr.bin/renice/renice.c
index de42e6294869..e169cad004a0 100644
--- a/usr.bin/renice/renice.c
+++ b/usr.bin/renice/renice.c
@@ -66,6 +66,7 @@ static void usage __P((void));
  */
 int
 main(argc, argv)
+	int argc;
 	char **argv;
 {
 	int which = PRIO_PROCESS;
diff --git a/usr.bin/sasc/Makefile b/usr.bin/sasc/Makefile
index 022cd27731d8..2f359d36af90 100644
--- a/usr.bin/sasc/Makefile
+++ b/usr.bin/sasc/Makefile
@@ -1,5 +1,7 @@
+# $FreeBSD$
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 
 PROG=	sasc
+WARNS?=	2
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/sasc/sasc.c b/usr.bin/sasc/sasc.c
index 9137a4d043ad..7f0950a31e59 100644
--- a/usr.bin/sasc/sasc.c
+++ b/usr.bin/sasc/sasc.c
@@ -67,7 +67,7 @@ main(int argc, char **argv)
   char c;
   int fd;
 
-  char *file = DEFAULT_FILE;
+  const char *file = DEFAULT_FILE;
   
   int show_dpi     = 0;
   int show_width   = 0;
diff --git a/usr.bin/size/Makefile b/usr.bin/size/Makefile
index 55aefd9f4944..f008b35e3591 100644
--- a/usr.bin/size/Makefile
+++ b/usr.bin/size/Makefile
@@ -4,5 +4,6 @@
 PROG=	size
 MAN=	size.1aout
 BINDIR= /usr/libexec/aout
+WARNS?=	2
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/size/size.c b/usr.bin/size/size.c
index b42e975da34a..e011ae612cd0 100644
--- a/usr.bin/size/size.c
+++ b/usr.bin/size/size.c
@@ -54,7 +54,7 @@ static const char rcsid[] =
 #include <stdio.h>
 #include <string.h>
 
-int	show __P((int, char *));
+int	show __P((int, const char *));
 static void	usage __P((void));
 
 int
@@ -86,7 +86,7 @@ main(argc, argv)
 int
 show(count, name)
 	int count;
-	char *name;
+	const char *name;
 {
 	static int first = 1;
 	struct exec head;
diff --git a/usr.bin/soelim/Makefile b/usr.bin/soelim/Makefile
index 8f86a6397632..cde738997eeb 100644
--- a/usr.bin/soelim/Makefile
+++ b/usr.bin/soelim/Makefile
@@ -1,5 +1,7 @@
+# $FreeBSD$
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 
 PROG=	soelim
+WARNS?=	2
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/soelim/soelim.c b/usr.bin/soelim/soelim.c
index 2f13c7791c5d..d17943de44e8 100644
--- a/usr.bin/soelim/soelim.c
+++ b/usr.bin/soelim/soelim.c
@@ -67,7 +67,7 @@ static const char rcsid[] =
  */
 #define	STDIN_NAME	"-"
 
-int process __P((char *));
+int process __P((const char *));
 
 int
 main(argc, argv)
@@ -91,7 +91,7 @@ main(argc, argv)
 
 int
 process(file)
-	char *file;
+	const char *file;
 {
 	register char *cp;
 	register int c;
diff --git a/usr.bin/strings/Makefile b/usr.bin/strings/Makefile
index 04b3f022c321..d75ae7bef6c1 100644
--- a/usr.bin/strings/Makefile
+++ b/usr.bin/strings/Makefile
@@ -3,6 +3,7 @@
 
 PROG=	strings
 MAN=	strings.1aout
+WARNS?=	2
 BINDIR= /usr/libexec/aout
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/strings/strings.c b/usr.bin/strings/strings.c
index 128292f22b4d..2410ba2901ce 100644
--- a/usr.bin/strings/strings.c
+++ b/usr.bin/strings/strings.c
@@ -84,7 +84,7 @@ main(argc, argv)
 	int exitcode, minlen;
 	short asdata, oflg, fflg;
 	u_char *bfr;
-	char *file, *p;
+	const char *file, *p;
 
 	(void) setlocale(LC_CTYPE, "");