diff --git a/m4/boost_fusion.m4 b/m4/boost_fusion.m4
index c133cfbd749c492f9e5f2589ad85fa330ea7ceda..6451705879190e1bbaa4c21ced2685d30cc7399c 100644
--- a/m4/boost_fusion.m4
+++ b/m4/boost_fusion.m4
@@ -19,7 +19,7 @@ AC_DEFUN([DUNE_BOOST_FUSION],
                                     boost::fusion::vector<int,char,double> v;
                                     return 0;
                                    ]]),
-                               dune_boost_fusion=yes, dune_boost_fusion=no)
+                               dune_cv_boost_fusion=yes, dune_cv_boost_fusion=no)
                                AC_LANG_POP([C++])])
          if test "x$dune_boost_filesystem" = "xyes"; then
                AC_DEFINE(HAVE_BOOST_FUSION,,[define if the Boost::Fusion headers are available])