diff --git a/src/ModelEquationBlock.cc b/src/ModelEquationBlock.cc
index d25e9221a95439b12407d10a072c965707e30b79..0bd416b8bc38b599e4e16fb1365961f04a786079 100644
--- a/src/ModelEquationBlock.cc
+++ b/src/ModelEquationBlock.cc
@@ -34,10 +34,7 @@ PlannerObjective::PlannerObjective(SymbolTable& symbol_table_arg,
 void
 PlannerObjective::writeDriverOutput(ostream& output) const
 {
-  output << "M_.NNZDerivatives_objective = [";
-  for (int i = 1; i < static_cast<int>(NNZDerivatives.size()); i++)
-    output << (i > computed_derivs_order ? -1 : NNZDerivatives[i]) << ";";
-  output << "];" << endl << "M_.objective_tmp_nbr = [";
+  output << "M_.objective_tmp_nbr = [";
   for (const auto& it : temporary_terms_derivatives)
     output << it.size() << "; ";
   output << "];" << endl;