diff -r a26b90a17c81 -r 8b2d4e5d96e4 test/hao_orlin_test.cc
--- a/test/hao_orlin_test.cc	Wed Nov 28 11:58:00 2012 +0100
+++ b/test/hao_orlin_test.cc	Wed Aug 07 06:55:05 2013 +0200
@@ -66,7 +66,7 @@
   CapMap cap;
   CutMap cut;
   Value v;
-  ignore_unused_variable_warning(v);
+  ::lemon::ignore_unused_variable_warning(v);
 
   HaoOrlin<Digraph, CapMap> ho_test(g, cap);
   const HaoOrlin<Digraph, CapMap>&