diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index b3899ea..7767690 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -671,7 +671,7 @@
 }
 
 
-struct nfs_rpc_ops	nfs_v2_clientops = {
+const struct nfs_rpc_ops nfs_v2_clientops = {
 	.version	= 2,		       /* protocol version */
 	.dentry_ops	= &nfs_dentry_operations,
 	.dir_inode_ops	= &nfs_dir_inode_operations,