diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
index 34138f4..82cf7e9 100644
--- a/fs/omfs/dir.c
+++ b/fs/omfs/dir.c
@@ -370,7 +370,7 @@ static bool omfs_fill_chain(struct inode *dir, struct dir_context *ctx,
 	return true;
 }
 
-static int omfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int omfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {