diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 134c999..93d6219 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -270,7 +270,7 @@
 	kmem_cache_destroy(bfs_inode_cachep);
 }
 
-static struct super_operations bfs_sops = {
+static const struct super_operations bfs_sops = {
 	.alloc_inode	= bfs_alloc_inode,
 	.destroy_inode	= bfs_destroy_inode,
 	.read_inode	= bfs_read_inode,