diff --git a/sbin/route/route.c b/sbin/route/route.c
index fb82db492b34..e05e3fce0b5c 100644
--- a/sbin/route/route.c
+++ b/sbin/route/route.c
@@ -1554,7 +1554,7 @@ rtmsg(int cmd, int flags, int fib)
 	return (0);
 }
 
-static const char *msgtypes[] = {
+static const char *const msgtypes[] = {
 	"",
 	"RTM_ADD: Add Route",
 	"RTM_DELETE: Delete Route",