diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 76b9800..baa2886 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -82,7 +82,7 @@
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs_sops = {
+static const struct super_operations nfs_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
@@ -126,7 +126,7 @@
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs4_sops = {
+static const struct super_operations nfs4_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,