diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index debdaf75cecf7563def7f6d8421a91e71bb08ca7..16ab604659e70af36c92141d13b5c35779cf405f 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -90,10 +90,7 @@ struct nf_conntrack_l4proto
 	struct module *me;
 };
 
-/* Existing built-in protocols */
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6;
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4;
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6;
+/* Existing built-in generic protocol */
 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_generic;
 
 #define MAX_NF_CT_PROTO 256
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 727b9530448a5fd42562a8163eaadc067da4b5d6..e6852f617217893f35edf544ec213f12c88246f2 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -26,6 +26,7 @@
 #include <net/netfilter/nf_conntrack_l4proto.h>
 #include <net/netfilter/nf_conntrack_l3proto.h>
 #include <net/netfilter/nf_conntrack_core.h>
+#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
 
 static bool ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
 			      struct nf_conntrack_tuple *tuple)
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index a1edb9c1adee8625e5d81800c0fa8bb96ec483cc..7d3944f02ea13f45f7a9c4355db18976e048008b 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -25,6 +25,8 @@
 #include <net/netfilter/nf_conntrack_l4proto.h>
 #include <net/netfilter/nf_conntrack_ecache.h>
 #include <net/netfilter/nf_log.h>
+#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
+#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
 
 /* Protects ct->proto.tcp */
 static DEFINE_RWLOCK(tcp_lock);
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 2b8b1f579f930f523e4733073a176a95ef29549b..d4021179e24ea9d3a1d9e5e1d6552bb013788528 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -22,6 +22,8 @@
 #include <net/netfilter/nf_conntrack_l4proto.h>
 #include <net/netfilter/nf_conntrack_ecache.h>
 #include <net/netfilter/nf_log.h>
+#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
+#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
 
 static unsigned int nf_ct_udp_timeout __read_mostly = 30*HZ;
 static unsigned int nf_ct_udp_timeout_stream __read_mostly = 180*HZ;