diff --git a/gestion/affichage.py b/gestion/affichage.py
index a618ff21..0cdbfdc6 100755
--- a/gestion/affichage.py
+++ b/gestion/affichage.py
@@ -42,7 +42,7 @@ import time
 import re
 
 oct_names = ["Pio", "Tio", "Gio", "Mio", "Kio"]
-oct_sizes = [1024**(len(oct_names) - i - 1) for i in xrange(0, len(oct_names))]
+oct_sizes = [1024**(len(oct_names) - i) for i in xrange(0, len(oct_names))]
 term_format = '\x1b\[[0-1];([0-9]|[0-9][0-9])m'
 dialog_format = '\\\Z.'
 sep_col = u"|"