1 files changed, 1 insertions, 1 deletions

diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index f80ee600d1bc..8cf898a59730 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -492,7 +492,7 @@ static int isofs_show_options(struct seq_file *m, struct dentry *root)
 
         if (sbi->s_check)               seq_printf(m, ",check=%c", sbi->s_check);
         if (sbi->s_mapping)             seq_printf(m, ",map=%c", sbi->s_mapping);
-        if (sbi->s_session != -1)       seq_printf(m, ",session=%u", sbi->s_session);
+        if (sbi->s_session != 255)      seq_printf(m, ",session=%u", sbi->s_session - 1);
         if (sbi->s_sbsector != -1)      seq_printf(m, ",sbsector=%u", sbi->s_sbsector);
 
         if (root->d_sb->s_blocksize != 1024)