diff --git a/Python/etc/postfix/aliases b/Python/etc/postfix/aliases
index 87679e0..39aada2 100644
--- a/Python/etc/postfix/aliases
+++ b/Python/etc/postfix/aliases
@@ -2,7 +2,7 @@ header()
 
 info["owner"] = "root"
 info["group"] = "root"
-info["perms"] = 644
+info["perms"] = 0644
 
 @# Fichier d'alias pour postfix
 @#