diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c
index 430657c3afd1..9a30ee958a7a 100644
--- a/sys/kern/subr_param.c
+++ b/sys/kern/subr_param.c
@@ -118,7 +118,7 @@ SYSCTL_ULONG(_kern, OID_AUTO, sgrowsiz, CTLFLAG_RDTUN, &sgrowsiz, 0,
  */
 struct	buf *swbuf;
 
-static char *vm_pnames[] = {
+static const char *const vm_pnames[] = {
 	"VMware Virtual Platform",	/* VMWare VM */
 	"Virtual Machine",		/* Microsoft VirtualPC */
 	"VirtualBox",			/* Sun xVM VirtualBox */