diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index c65b93a7b7113660d9f946128c0a4acee810de0f..2acc5dc32807bd5c24a6d3ac52a9662f1ac880ce 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -91,7 +91,7 @@ void ip_send_check(struct iphdr *iph)
 }
 EXPORT_SYMBOL(ip_send_check);
 
-int __ip_local_out_sk(struct sock *sk, struct sk_buff *skb)
+static int __ip_local_out_sk(struct sock *sk, struct sk_buff *skb)
 {
 	struct iphdr *iph = ip_hdr(skb);