diff --git a/lemon/math.h b/lemon/math.h
--- a/lemon/math.h
+++ b/lemon/math.h
@@ -2,7 +2,7 @@
  *
  * This file is a part of LEMON, a generic C++ optimization library.
  *
- * Copyright (C) 2003-2009
+ * Copyright (C) 2003-2011
  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
  * (Egervary Research Group on Combinatorial Optimization, EGRES).
  *
@@ -56,7 +56,7 @@
   const long double SQRT1_2 = 0.7071067811865475244008443621048490L;
 
   ///Check whether the parameter is NaN or not
-  
+
   ///This function checks whether the parameter is NaN or not.
   ///Is should be equivalent with std::isnan(), but it is not
   ///provided by all compilers.