diff --git a/extensions/MeshFunction_Level.h b/extensions/MeshFunction_Level.h
index 4646867066e5df5b5fff7604142ae33713360382..80b72a5ab37b742fd50f76f3a19bf0866884083c 100644
--- a/extensions/MeshFunction_Level.h
+++ b/extensions/MeshFunction_Level.h
@@ -19,6 +19,8 @@
 #ifndef EXTENSIONS_MESH_FUNCTION_LEVEL_H
 #define EXTENSIONS_MESH_FUNCTION_LEVEL_H
 
+#include "Refinement.h"
+
 namespace AMDiS { namespace extensions {