diff --git a/sbin/route/route.c b/sbin/route/route.c
--- a/sbin/route/route.c
+++ b/sbin/route/route.c
@@ -578,15 +578,18 @@
 routename(struct sockaddr *sa)
 {
 	struct sockaddr_dl *sdl;
-	const char *cp;
 	int n;
 
 	if (!domain_initialized) {
+		const char *domain_part;
+
 		domain_initialized = true;
-		if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
-		    (cp = strchr(domain, '.'))) {
-			domain[MAXHOSTNAMELEN] = '\0';
-			(void)strcpy(domain, cp + 1);
+		if (gethostname(domain, sizeof(domain) - 1) == 0 &&
+		    (domain_part = strchr(domain, '.')) != NULL) {
+			domain[sizeof(domain) - 1] = '\0';
+			domain_part++;
+			(void)memmove(domain, domain_part,
+			    strlen(domain_part) + 1 /* NUL */);
 		} else
 			domain[0] = '\0';
 	}