diff --git a/dune/gfe/harmonicenergy.hh b/dune/gfe/harmonicenergy.hh
index b9f561c9009977a13c54483563bce55786437b39..d4558d219c87e747062cc1fb8f69315ecba5c20c 100644
--- a/dune/gfe/harmonicenergy.hh
+++ b/dune/gfe/harmonicenergy.hh
@@ -1,5 +1,5 @@
-#ifndef HARMONIC_ENERGY_LOCAL_STIFFNESS_HH
-#define HARMONIC_ENERGY_LOCAL_STIFFNESS_HH
+#ifndef DUNE_GFE_HARMONICENERGY_HH
+#define DUNE_GFE_HARMONICENERGY_HH
 
 #include <dune/common/fmatrix.hh>
 #include <dune/geometry/quadraturerules.hh>