diff --git a/src/samplefunctional.hh b/src/samplefunctional.hh
index 8bcf1cfff503cde50d35906a37ed33ad715aa06d..f5531bf9871042b1f98d24cda95772d7cc6896c2 100644
--- a/src/samplefunctional.hh
+++ b/src/samplefunctional.hh
@@ -13,7 +13,6 @@
 #include <dune/tnnmg/problem-classes/directionalconvexfunction.hh>
 
 #include "mynonlinearity.hh"
-#include "nicefunction.hh"
 
 namespace Dune {
 template <int dimension> class SampleFunctional {