diff --git a/gestion/ldap_crans.py b/gestion/ldap_crans.py
index cbdc1676..64efb046 100755
--- a/gestion/ldap_crans.py
+++ b/gestion/ldap_crans.py
@@ -2086,9 +2086,9 @@ class machine(base_classes_crans) :
         if clef == 1 :
             # Génération
             clef = ''
-            for i in range(20) :
-                clef += random.choice(filter(lambda x: x != 'l', string.lowercase) + 
-                                      filter(lambda x: x != '1', string.digits))
+            for i in range(22) :
+                clef += random.choice(filter(lambda x: x != 'l' and x != 'o', string.lowercase) + 
+                                      filter(lambda x: x != '1' and x != '0', string.digits))
         
         self._set('ipsec',[clef])