diff --git a/Applications/ApplicationsLib/Simulation.h b/Applications/ApplicationsLib/Simulation.h
index 7aff506877e2e61e9200f322d2b2652e3d8b5073..ec8b2880683dc80159b47eb9e383c19cbff65f59 100644
--- a/Applications/ApplicationsLib/Simulation.h
+++ b/Applications/ApplicationsLib/Simulation.h
@@ -38,8 +38,8 @@ public:
         bool nonfatal, std::string const& outdir, std::string const& mesh_dir,
         std::string const& script_dir, bool write_prj);
 
-    double currentTime() const;
-    double endTime() const;
+    OGS_EXPORT_SYMBOL double currentTime() const;
+    OGS_EXPORT_SYMBOL double endTime() const;
     OGS_EXPORT_SYMBOL bool executeTimeStep();
     OGS_EXPORT_SYMBOL bool executeSimulation();
     OGS_EXPORT_SYMBOL void outputLastTimeStep() const;