diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 51c279a..fd4cf2c 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -21,7 +21,7 @@
 {
 	struct inode *inode = file_inode(file);
 	struct super_block *sb = inode->i_sb;
-	struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
 	struct object_info obj;
 	struct adfs_dir dir;
 	int ret = 0;
@@ -69,7 +69,7 @@
 {
 	int ret = -EINVAL;
 #ifdef CONFIG_ADFS_FS_RW
-	struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
 	struct adfs_dir dir;
 
 	printk(KERN_INFO "adfs_dir_update: object %06X in dir %06X\n",
@@ -129,7 +129,7 @@
 adfs_dir_lookup_byname(struct inode *inode, struct qstr *name, struct object_info *obj)
 {
 	struct super_block *sb = inode->i_sb;
-	struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
 	struct adfs_dir dir;
 	int ret;