diff --git a/include/arpa/telnet.h b/include/arpa/telnet.h
index af85741e40fa..079119c697e2 100644
--- a/include/arpa/telnet.h
+++ b/include/arpa/telnet.h
@@ -64,7 +64,7 @@
 #define SYNCH	242		/* for telfunc calls */
 
 #ifdef TELCMDS
-char *telcmds[] = {
+const char *telcmds[] = {
 	"EOF", "SUSP", "ABORT", "EOR",
 	"SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
 	"EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC",
@@ -126,7 +126,7 @@ extern char *telcmds[];
 
 #define	NTELOPTS	(1+TELOPT_NEW_ENVIRON)
 #ifdef TELOPTS
-char *telopts[NTELOPTS+1] = {
+const char *telopts[NTELOPTS+1] = {
 	"BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
 	"STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
 	"NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
@@ -226,7 +226,7 @@ char *telopts[NTELOPTS+1] = {
 			0
 
 #ifdef	SLC_NAMES
-char *slc_names[] = {
+const char *slc_names[] = {
 	SLC_NAMELIST
 };
 #else
@@ -287,7 +287,7 @@ extern char *slc_names[];
 #define	AUTHTYPE_TEST		99
 
 #ifdef	AUTH_NAMES
-char *authtype_names[] = {
+const char *authtype_names[] = {
 	"NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK", NULL, "SRA",
 	0
 };
@@ -318,12 +318,12 @@ extern char *authtype_names[];
 #define	ENCTYPE_CNT		3
 
 #ifdef	ENCRYPT_NAMES
-char *encrypt_names[] = {
+const char *encrypt_names[] = {
 	"IS", "SUPPORT", "REPLY", "START", "END",
 	"REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
 	0
 };
-char *enctype_names[] = {
+const char *enctype_names[] = {
 	"ANY", "DES_CFB64",  "DES_OFB64",
 	0
 };
diff --git a/libexec/telnetd/sys_term.c b/libexec/telnetd/sys_term.c
index 0fb8512c371f..3d9e091b5e49 100644
--- a/libexec/telnetd/sys_term.c
+++ b/libexec/telnetd/sys_term.c
@@ -1098,14 +1098,14 @@ addarg(char **argv, const char *val)
 	}
 	for (cpp = argv; *cpp; cpp++)
 		;
-	if (cpp == &argv[(int)argv[-1]]) {
+	if (cpp == &argv[(long)argv[-1]]) {
 		--argv;
-		*argv = (char *)((int)(*argv) + 10);
-		argv = (char **)realloc(argv, sizeof(*argv)*((int)(*argv) + 2));
+		*argv = (char *)((long)(*argv) + 10);
+		argv = (char **)realloc(argv, sizeof(*argv)*((long)(*argv) + 2));
 		if (argv == NULL)
 			return(NULL);
 		argv++;
-		cpp = &argv[(int)argv[-1] - 10];
+		cpp = &argv[(long)argv[-1] - 10];
 	}
 	*cpp++ = strdup(val);
 	*cpp = 0;
diff --git a/usr.bin/telnet/commands.c b/usr.bin/telnet/commands.c
index c291466cbe10..b38893e4d5d0 100644
--- a/usr.bin/telnet/commands.c
+++ b/usr.bin/telnet/commands.c
@@ -2397,7 +2397,7 @@ help(int argc, char *argv[])
 		printf("Commands may be abbreviated.  Commands are:\n\n");
 		for (c = cmdtab; c->name; c++)
 			if (c->help) {
-				printf("%-*s\t%s\n", HELPINDENT, c->name,
+				printf("%-*s\t%s\n", (int)HELPINDENT, c->name,
 								    c->help);
 			}
 		return 0;