diff --git a/sys/contrib/ipfilter/netinet/ip_nat.c b/sys/contrib/ipfilter/netinet/ip_nat.c
index 997b59dfa15..ead93abe3ec 100644
--- a/sys/contrib/ipfilter/netinet/ip_nat.c
+++ b/sys/contrib/ipfilter/netinet/ip_nat.c
@@ -2879,11 +2879,14 @@ void nat_log(nat, type)
 struct nat *nat;
 u_int type;
 {
+# ifdef LARGE_NAT
 	struct ipnat *np;
+	int rulen;
+# endif
 	struct natlog natl;
 	void *items[1];
 	size_t sizes[1];
-	int rulen, types[1];
+	int types[1];
 
 	natl.nl_inip = nat->nat_inip;
 	natl.nl_outip = nat->nat_outip;