diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 9955232..052387e 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -213,7 +213,7 @@
 extern int hfs_part_find(struct super_block *, sector_t *, sector_t *);
 
 /* string.c */
-extern struct dentry_operations hfs_dentry_operations;
+extern const struct dentry_operations hfs_dentry_operations;
 
 extern int hfs_hash_dentry(struct dentry *, struct qstr *);
 extern int hfs_strcmp(const unsigned char *, unsigned int,
diff --git a/fs/hfs/sysdep.c b/fs/hfs/sysdep.c
index 5bf89ec..7478f5c 100644
--- a/fs/hfs/sysdep.c
+++ b/fs/hfs/sysdep.c
@@ -31,7 +31,7 @@
 	return 1;
 }
 
-struct dentry_operations hfs_dentry_operations =
+const struct dentry_operations hfs_dentry_operations =
 {
 	.d_revalidate	= hfs_revalidate_dentry,
 	.d_hash		= hfs_hash_dentry,