diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 7c27fa1030e8..feb04ea20f11 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h
@@ -52,6 +52,12 @@ struct sock *inet_diag_find_one_icsk(struct net *net,
 
 int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
 
+void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk);
+
+int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
+			     struct inet_diag_msg *r, int ext,
+			     struct user_namespace *user_ns);
+
 extern int  inet_diag_register(const struct inet_diag_handler *handler);
 extern void inet_diag_unregister(const struct inet_diag_handler *handler);
 #endif /* _INET_DIAG_H_ */
diff --git a/net/sctp/sctp_diag.c b/net/sctp/sctp_diag.c
index 1ce724b87618..f69edcf219e5 100644
--- a/net/sctp/sctp_diag.c
+++ b/net/sctp/sctp_diag.c
@@ -3,12 +3,6 @@
 #include <linux/sock_diag.h>
 #include <net/sctp/sctp.h>
 
-extern void inet_diag_msg_common_fill(struct inet_diag_msg *r,
-				      struct sock *sk);
-extern int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
-				    struct inet_diag_msg *r, int ext,
-				    struct user_namespace *user_ns);
-
 static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
 			       void *info);