diff --git a/Python/etc/postfix/aliases b/Python/etc/postfix/aliases
index 49f6648..402000f 100644
--- a/Python/etc/postfix/aliases
+++ b/Python/etc/postfix/aliases
@@ -24,7 +24,8 @@ for dest in ["abuse", "amavis", "backup", "bind", "bin", "clamav", "daemon",
             "usenet", "uucp", "webmaster", "www-clubs", "www-data", "www-perso"]:
     print "%s: root" % dest
 
-@root: root@crans.org
+if not has("users"):
+    @root: root@crans.org
 @
 @# Following alias is required by the new mail protocol, RFC 822
 @postmaster: root