diff --git a/src/SymbolTable.cc b/src/SymbolTable.cc
index 18aad1c1a70adbeb8012189d6d0ef4462b0bbb63..74daa328a8f9a00c3d7f91df36cc38bb242a300f 100644
--- a/src/SymbolTable.cc
+++ b/src/SymbolTable.cc
@@ -248,6 +248,12 @@ SymbolTable::writeOutput(ostream &output) const noexcept(false)
               output << "M_ = set_exogenous_variables_for_simulation(M_);" << endl;
           }
     }
+  else
+    {
+      output << "M_.exo_names = {};" << endl;
+      output << "M_.exo_names_tex = {};" << endl;
+      output << "M_.exo_names_long = {};" << endl;
+    }
 
   if (exo_det_nbr() > 0)
     {
@@ -339,6 +345,12 @@ SymbolTable::writeOutput(ostream &output) const noexcept(false)
             output << "};" << endl;
           }
     }
+  else
+    {
+      output << "M_.param_names = {};" << endl;
+      output << "M_.param_names_tex = {};" << endl;
+      output << "M_.param_names_long = {};" << endl;
+    }
 
   output << "M_.exo_det_nbr = " << exo_det_nbr() << ";" << endl
          << "M_.exo_nbr = " << exo_nbr() << ";" << endl