diff --git a/dune/solvers/solvers/quadraticipopt.hh b/dune/solvers/solvers/quadraticipopt.hh
index 742379887d2d007e220dc7293a31322d257aa3d1..2307d16b312940a9801869e59aae74d9ffd2728f 100644
--- a/dune/solvers/solvers/quadraticipopt.hh
+++ b/dune/solvers/solvers/quadraticipopt.hh
@@ -1,7 +1,7 @@
 // -*- tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=8 sw=4 sts=4:
-#ifndef DUNE_QUADRATIC_IPOPT_SOLVER_HH
-#define DUNE_QUADRATIC_IPOPT_SOLVER_HH
+#ifndef DUNE_SOLVERS_SOLVERS_QUADRATIC_IPOPT_SOLVER_HH
+#define DUNE_SOLVERS_SOLVERS_QUADRATIC_IPOPT_SOLVER_HH
 
 /** \file
     \brief A wrapper for the IPOpt solver for quadratic optimization problem