diff --git a/sbin/mdconfig/mdconfig.c b/sbin/mdconfig/mdconfig.c
index 263a94214f6f..6296da799268 100644
--- a/sbin/mdconfig/mdconfig.c
+++ b/sbin/mdconfig/mdconfig.c
@@ -164,7 +164,7 @@ main(int argc, char **argv)
 			if (!strncmp(optarg, MD_NAME, sizeof(MD_NAME) - 1))
 				optarg += sizeof(MD_NAME) - 1;
 			mdio.md_unit = strtoul(optarg, &p, 0);
-			if ((unsigned)mdio.md_unit == ULONG_MAX || *p != '\0')
+			if (mdio.md_unit == (unsigned)ULONG_MAX || *p != '\0')
 				errx(1, "bad unit: %s", optarg);
 			mdio.md_options &= ~MD_AUTOUNIT;
 			break;
diff --git a/sbin/mdmfs/mdmfs.c b/sbin/mdmfs/mdmfs.c
index e7412995c852..035f1fe77c82 100644
--- a/sbin/mdmfs/mdmfs.c
+++ b/sbin/mdmfs/mdmfs.c
@@ -246,7 +246,7 @@ main(int argc, char **argv)
 		unit = -1;
 	} else {
 		unit = strtoul(unitstr, &p, 10);
-		if ((unsigned)unit == ULONG_MAX || *p != '\0')
+		if (unit == (unsigned)ULONG_MAX || *p != '\0')
 			errx(1, "bad device unit: %s", unitstr);
 	}
 
@@ -394,7 +394,7 @@ do_mdconfig_attach_au(const char *args, const enum md_types mdtype)
 	strncpy(linebuf, linep + mdnamelen, linelen);
 	linebuf[linelen] = '\0';
 	unit = strtoul(linebuf, &p, 10);
-	if ((unsigned)unit == ULONG_MAX || *p != '\n')
+	if (unit == (unsigned)ULONG_MAX || *p != '\n')
 		errx(1, "unexpected output from mdconfig (attach)");
 
 	fclose(sfd);
@@ -513,7 +513,7 @@ extract_ugid(const char *str, struct mtpt_info *mip)
 
 	/* Derive uid. */
 	*uid = strtoul(user, &p, 10);
-	if ((unsigned)*uid == ULONG_MAX)
+	if (*uid == (uid_t)ULONG_MAX)
 		usage();
 	if (*p != '\0') {
 		pw = getpwnam(user);
@@ -525,7 +525,7 @@ extract_ugid(const char *str, struct mtpt_info *mip)
 
 	/* Derive gid. */
 	*gid = strtoul(group, &p, 10);
-	if ((unsigned)*gid == ULONG_MAX)
+	if (*gid == (gid_t)ULONG_MAX)
 		usage();
 	if (*p != '\0') {
 		gr = getgrnam(group);
diff --git a/usr.bin/chpass/field.c b/usr.bin/chpass/field.c
index ffa79fa31c3a..fe5b30f71049 100644
--- a/usr.bin/chpass/field.c
+++ b/usr.bin/chpass/field.c
@@ -118,7 +118,7 @@ p_uid(char *p, struct passwd *pw, ENTRY *ep __unused)
 	}
 	errno = 0;
 	id = strtoul(p, &np, 10);
-	if (*np || (id == ULONG_MAX && errno == ERANGE)) {
+	if (*np || (id == (uid_t)ULONG_MAX && errno == ERANGE)) {
 		warnx("illegal uid");
 		return (-1);
 	}
@@ -148,7 +148,7 @@ p_gid(char *p, struct passwd *pw, ENTRY *ep __unused)
 	}
 	errno = 0;
 	id = strtoul(p, &np, 10);
-	if (*np || (id == ULONG_MAX && errno == ERANGE)) {
+	if (*np || (id == (uid_t)ULONG_MAX && errno == ERANGE)) {
 		warnx("illegal gid");
 		return (-1);
 	}