diff --git a/SConstruct b/SConstruct
index df1dd3e0f..34e549037 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1,3 +1,4 @@
+## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 import os.path
 import build
 
diff --git a/build.py b/build.py
index 19aeefb27..33c4a406c 100644
--- a/build.py
+++ b/build.py
@@ -1,3 +1,4 @@
+## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 # Copyright (c) 2006 INRIA
 # All rights reserved.
 #
diff --git a/utils/grid.py b/utils/grid.py
index df523dee6..df83d80e6 100755
--- a/utils/grid.py
+++ b/utils/grid.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 
 import cairo
 import sys