diff --git a/Python/etc/monit/services b/Python/etc/monit/services
index 03eb68b..238751b 100644
--- a/Python/etc/monit/services
+++ b/Python/etc/monit/services
@@ -363,7 +363,9 @@ for line in metadata.Probes["fstab_local"].splitlines():
     comment("partition %s" % mntpoint)
 
     # Permission attendue
-    perm = '1660'
+    perm = '0660'
+    if has('wheezy'):
+        perm = '1660'
 
     # on vérifie le filesystem directement pour les volumes lvm
     if fs.startswith('/dev/mapper'):