diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c
index f848b52..3ddcbb1 100644
--- a/fs/lockd/clnt4xdr.c
+++ b/fs/lockd/clnt4xdr.c
@@ -598,7 +598,7 @@
 	PROC(GRANTED_RES,	res,		norep),
 };
 
-struct rpc_version	nlm_version4 = {
+const struct rpc_version nlm_version4 = {
 	.number		= 4,
 	.nrprocs	= ARRAY_SIZE(nlm4_procedures),
 	.procs		= nlm4_procedures,