diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 95e92e4..4633d40 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -7109,7 +7109,7 @@
 #endif /* CONFIG_NFS_V4_1 */
 };
 
-struct rpc_version		nfs_version4 = {
+const struct rpc_version nfs_version4 = {
 	.number			= 4,
 	.nrprocs		= ARRAY_SIZE(nfs4_procedures),
 	.procs			= nfs4_procedures