diff --git a/lam/po/make_mo b/lam/po/make_mo
index 7cf58a53..9e97e8de 100755
--- a/lam/po/make_mo
+++ b/lam/po/make_mo
@@ -1,10 +1,11 @@
 #!/bin/bash
 # $Id$
 #
-# Copyright (C) 2003 - 2006  Roland Gruber
+# Copyright (C) 2003 - 2017  Roland Gruber
 # This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
 
 # This script generates a messages.mo file from the translated messages.po file.
 
 rm -f messages.mo
+chmod -x messages.po
 msgfmt -v -c --statistics messages.po -o messages.mo