diff --git a/openwrt/package/iptables/kernelconfig.mk b/openwrt/package/iptables/kernelconfig.mk
index 18c8e7540f..319cea8e6a 100644
--- a/openwrt/package/iptables/kernelconfig.mk
+++ b/openwrt/package/iptables/kernelconfig.mk
@@ -1,6 +1,7 @@
 include $(LINUX_DIR)/.config
 
 # translate linux kernel config to filenames
+ext-$(CONFIG_IP_NF_NAT) += SNAT DNAT
 ext-$(CONFIG_IP_NF_MATCH_LIMIT) += limit
 ext-$(CONFIG_IP_NF_MATCH_MAC) += mac
 ext-$(CONFIG_IP_NF_MATCH_PKTTYPE) += pkttype