diff --git a/src/SteadyStateModel.cc b/src/SteadyStateModel.cc
index 0291135f2ad0c33f557100b1cedb11c728b901ea..4b97d953f73a8f645016193447524cb324fe0910 100644
--- a/src/SteadyStateModel.cc
+++ b/src/SteadyStateModel.cc
@@ -225,6 +225,7 @@ SteadyStateModel::writeSteadyStateFile(const string &basename, bool ramsey_model
   output << "end" << endl;
   if (julia)
     output << "end" << endl;
+  output.close();
 }
 
 void