diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 033c3ab..3fe958e 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -1022,7 +1022,7 @@
 	.twsk_obj_size	= sizeof(struct inet_timewait_sock),
 };
 
-struct proto dccp_v4_prot = {
+static struct proto dccp_v4_prot = {
 	.name			= "DCCP",
 	.owner			= THIS_MODULE,
 	.close			= dccp_close,