diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 8ed1df2..2409619 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -270,7 +270,7 @@
 
 int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb);
 
-struct sock *dccp_create_openreq_child(struct sock *sk,
+struct sock *dccp_create_openreq_child(const struct sock *sk,
 				       const struct request_sock *req,
 				       const struct sk_buff *skb);