diff --git a/src/rodwriter.hh b/src/rodwriter.hh
index f4fad40b7698af0b8e227ca2c53d6a1ad6110d2d..bccd035cbb3be75a897722daa6665d7ed2993f5c 100644
--- a/src/rodwriter.hh
+++ b/src/rodwriter.hh
@@ -1,6 +1,7 @@
 #ifndef ROD_WRITER_HH
 #define ROD_WRITER_HH
 
+#include <fstream>
 
 void writeRod(const Dune::BlockVector<Dune::FieldVector<double,3> >& rod, 
               const std::string& filename)