diff --git a/matlab/dynare_m.exe b/matlab/dynare_m.exe
index 0aaa15d50..c407645af 100755
Binary files a/matlab/dynare_m.exe and b/matlab/dynare_m.exe differ
diff --git a/parser.src/ModelTree.cc b/parser.src/ModelTree.cc
index cc3b2e43b..59a0534f0 100644
--- a/parser.src/ModelTree.cc
+++ b/parser.src/ModelTree.cc
@@ -1758,7 +1758,7 @@ ModelTree::writeOutput(ostream &output) const
       output << "oo_.recur_steady_state = zeros(" << symbol_table.recur_nbr << ", 1);\n";
     }
   if (symbol_table.parameter_nbr)
-    output << "M_.params = zeros(" << symbol_table.parameter_nbr << ", 1);\n";
+    output << "M_.params = NaN(" << symbol_table.parameter_nbr << ", 1);\n";
 }
 
 void