diff --git a/src/gen/plug/docgen/graphdoc.py b/src/gen/plug/docgen/graphdoc.py
index 34d18a5ca..4b8778e06 100644
--- a/src/gen/plug/docgen/graphdoc.py
+++ b/src/gen/plug/docgen/graphdoc.py
@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+#!/usr/bin/env python
 #
 # Gramps - a GTK+/GNOME based genealogy program
 #