diff --git a/lemon/bits/utility.h b/lemon/bits/utility.h
--- a/lemon/bits/utility.h
+++ b/lemon/bits/utility.h
@@ -1,6 +1,6 @@
-/* -*- C++ -*-
+/* -*- mode: C++; indent-tabs-mode: nil; -*-
  *
- * This file is a part of LEMON, a generic C++ optimization library
+ * This file is a part of LEMON, a generic C++ optimization library.
  *
  * Copyright (C) 2003-2008
  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
@@ -83,13 +83,13 @@
   template<int T> struct dummy { dummy(int) {} };
 
   /**************** enable_if from BOOST ****************/
-  
+
   template <typename Type, typename T = void>
   struct exists {
     typedef T type;
   };
 
- 
+
   template <bool B, class T = void>
   struct enable_if_c {
     typedef T type;
@@ -98,7 +98,7 @@
   template <class T>
   struct enable_if_c<false, T> {};
 
-  template <class Cond, class T = void> 
+  template <class Cond, class T = void>
   struct enable_if : public enable_if_c<Cond::value, T> {};
 
   template <bool B, class T>
@@ -109,7 +109,7 @@
   template <class T>
   struct lazy_enable_if_c<false, T> {};
 
-  template <class Cond, class T> 
+  template <class Cond, class T>
   struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
 
 
@@ -121,7 +121,7 @@
   template <class T>
   struct disable_if_c<true, T> {};
 
-  template <class Cond, class T = void> 
+  template <class Cond, class T = void>
   struct disable_if : public disable_if_c<Cond::value, T> {};
 
   template <bool B, class T>
@@ -132,7 +132,7 @@
   template <class T>
   struct lazy_disable_if_c<true, T> {};
 
-  template <class Cond, class T> 
+  template <class Cond, class T>
   struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
 
 } // namespace lemon