diff --git a/net/wanrouter/af_wanpipe.c b/net/wanrouter/af_wanpipe.c
index 59fec59..67948bf 100644
--- a/net/wanrouter/af_wanpipe.c
+++ b/net/wanrouter/af_wanpipe.c
@@ -181,7 +181,7 @@
 #endif
 
 static int sk_count;
-extern struct proto_ops wanpipe_ops;
+extern const struct proto_ops wanpipe_ops;
 static unsigned long find_free_critical;
 
 static void wanpipe_unlink_driver(struct sock *sk);
@@ -2546,7 +2546,7 @@
 	return 0;
 }
 
-struct proto_ops wanpipe_ops = {
+const struct proto_ops wanpipe_ops = {
 	.family = 	PF_WANPIPE,
 	.owner =	THIS_MODULE,
 	.release = 	wanpipe_release,