diff --git a/test/preflow_test.cc b/test/preflow_test.cc
--- a/test/preflow_test.cc
+++ b/test/preflow_test.cc
@@ -2,7 +2,7 @@
  *
  * This file is a part of LEMON, a generic C++ optimization library.
  *
- * Copyright (C) 2003-2010
+ * Copyright (C) 2003-2011
  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
  * (Egervary Research Group on Combinatorial Optimization, EGRES).
  *
@@ -159,7 +159,7 @@
 void initFlowTest()
 {
   DIGRAPH_TYPEDEFS(SmartDigraph);
-  
+
   SmartDigraph g;
   SmartDigraph::ArcMap<int> cap(g),iflow(g);
   Node s=g.addNode(); Node t=g.addNode();
@@ -271,6 +271,6 @@
         "The max flow value or the three min cut values are incorrect.");
 
   initFlowTest();
-  
+
   return 0;
 }