diff --git a/openwrt/target/linux/linux-2.4/config/brcm b/openwrt/target/linux/linux-2.4/config/brcm
index 3ddadba06e..5482e4617f 100644
--- a/openwrt/target/linux/linux-2.4/config/brcm
+++ b/openwrt/target/linux/linux-2.4/config/brcm
@@ -362,6 +362,7 @@ CONFIG_IP_NF_CT_ACCT=m
 CONFIG_IP_NF_MATCH_CONNBYTES=m
 CONFIG_IP_NF_CT_PROTO_GRE=m
 CONFIG_IP_NF_PPTP=m
+CONFIG_IP_NF_SIP=m
 CONFIG_IP_NF_QUEUE=m
 CONFIG_IP_NF_IPTABLES=y
 CONFIG_IP_NF_MATCH_LIMIT=m
@@ -410,6 +411,7 @@ CONFIG_IP_NF_TARGET_MASQUERADE=y
 CONFIG_IP_NF_TARGET_REDIRECT=m
 CONFIG_IP_NF_TARGET_NETMAP=m
 CONFIG_IP_NF_NAT_PPTP=m
+CONFIG_IP_NF_NAT_SIP=m
 CONFIG_IP_NF_NAT_PROTO_GRE=m
 CONFIG_IP_NF_NAT_AMANDA=m
 CONFIG_IP_NF_NAT_SNMP_BASIC=m
diff --git a/openwrt/target/linux/linux-2.4/config/x86 b/openwrt/target/linux/linux-2.4/config/x86
index da27d3c458..bc139cc3a8 100644
--- a/openwrt/target/linux/linux-2.4/config/x86
+++ b/openwrt/target/linux/linux-2.4/config/x86
@@ -286,6 +286,7 @@ CONFIG_IP_NF_CT_ACCT=m
 CONFIG_IP_NF_MATCH_CONNBYTES=m
 CONFIG_IP_NF_CT_PROTO_GRE=m
 CONFIG_IP_NF_PPTP=m
+CONFIG_IP_NF_SIP=m
 CONFIG_IP_NF_QUEUE=m
 CONFIG_IP_NF_IPTABLES=y
 CONFIG_IP_NF_MATCH_LIMIT=m
@@ -334,6 +335,7 @@ CONFIG_IP_NF_TARGET_MASQUERADE=y
 CONFIG_IP_NF_TARGET_REDIRECT=m
 CONFIG_IP_NF_TARGET_NETMAP=m
 CONFIG_IP_NF_NAT_PPTP=m
+CONFIG_IP_NF_NAT_SIP=m
 CONFIG_IP_NF_NAT_PROTO_GRE=m
 CONFIG_IP_NF_NAT_AMANDA=m
 CONFIG_IP_NF_NAT_SNMP_BASIC=m