diff --git a/sys/contrib/ipfilter/netinet/ip_nat.c b/sys/contrib/ipfilter/netinet/ip_nat.c
index 41e51880b3dd..0475a4386079 100644
--- a/sys/contrib/ipfilter/netinet/ip_nat.c
+++ b/sys/contrib/ipfilter/netinet/ip_nat.c
@@ -6245,7 +6245,7 @@ ipf_nat_rule_deref(softc, inp)
 
 	if (n->in_tqehead[0] != NULL) {
 		if (ipf_deletetimeoutqueue(n->in_tqehead[0]) == 0) {
-			ipf_freetimeoutqueue(softc, n->in_tqehead[1]);
+			ipf_freetimeoutqueue(softc, n->in_tqehead[0]);
 		}
 	}