diff --git a/CoMISo/NSolver/IPOPTSolver.cc b/CoMISo/NSolver/IPOPTSolver.cc
index ff1401e3972ac2e7715d4a11e4feb1f76c6ee73a..add23b7b1fb80aacd872612425dfba3777cbc052 100644
--- a/CoMISo/NSolver/IPOPTSolver.cc
+++ b/CoMISo/NSolver/IPOPTSolver.cc
@@ -42,6 +42,8 @@ solve(NProblemGmmInterface* _problem, std::vector<NConstraintInterface*>& _const
   //  app->Options()->SetIntegerValue("print_level", 0);
   app->Options()->SetIntegerValue("max_iter", 100);
 
+//  app->Options()->SetStringValue("expect_infeasible_problem", "yes");
+
   // Initialize the IpoptApplication and process the options
   Ipopt::ApplicationReturnStatus status;
   status = app->Initialize();