diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index f064031..fee171e 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -1144,7 +1144,7 @@
 	net->ipv4.icmp_sk = NULL;
 }
 
-int __net_init icmp_sk_init(struct net *net)
+static int __net_init icmp_sk_init(struct net *net)
 {
 	int i, err;