diff --git a/src/solver/optimisation/opt_pilotage_optimisation_lineaire.cpp b/src/solver/optimisation/opt_pilotage_optimisation_lineaire.cpp
index 669b2943c9..de1732d43c 100644
--- a/src/solver/optimisation/opt_pilotage_optimisation_lineaire.cpp
+++ b/src/solver/optimisation/opt_pilotage_optimisation_lineaire.cpp
@@ -36,11 +36,6 @@ bool OPT_PilotageOptimisationLineaire(const OptimizationOptions& options,
     {
         if (problemeHebdo->TypeDOptimisation == OPTIMISATION_LINEAIRE)
         {
-            for (uint32_t pays = 0; pays < problemeHebdo->NombreDePays; pays++)
-            {
-                problemeHebdo->CoutDeDefaillanceEnReserve[pays] = 1.e+6;
-            }
-
             problemeHebdo->NombreDeJours = (int)(problemeHebdo->NombreDePasDeTemps
                                                  / problemeHebdo->NombreDePasDeTempsDUneJournee);
 
diff --git a/src/solver/simulation/include/antares/solver/simulation/sim_structure_probleme_economique.h b/src/solver/simulation/include/antares/solver/simulation/sim_structure_probleme_economique.h
index 11d1ea116a..aa46e5962d 100644
--- a/src/solver/simulation/include/antares/solver/simulation/sim_structure_probleme_economique.h
+++ b/src/solver/simulation/include/antares/solver/simulation/sim_structure_probleme_economique.h
@@ -493,7 +493,6 @@ struct PROBLEME_HEBDO
 
     std::vector<double> CoutDeDefaillancePositive;
     std::vector<double> CoutDeDefaillanceNegative;
-    std::vector<double> CoutDeDefaillanceEnReserve;
 
     std::vector<PALIERS_THERMIQUES> PaliersThermiquesDuPays;
     std::vector<ENERGIES_ET_PUISSANCES_HYDRAULIQUES> CaracteristiquesHydrauliques;
diff --git a/src/solver/simulation/sim_alloc_probleme_hebdo.cpp b/src/solver/simulation/sim_alloc_probleme_hebdo.cpp
index 305d5fb31b..57f84225b1 100644
--- a/src/solver/simulation/sim_alloc_probleme_hebdo.cpp
+++ b/src/solver/simulation/sim_alloc_probleme_hebdo.cpp
@@ -84,7 +84,6 @@ void SIM_AllocationProblemeDonneesGenerales(PROBLEME_HEBDO& problem,
 
     problem.CoutDeDefaillancePositive.assign(nbPays, 0);
     problem.CoutDeDefaillanceNegative.assign(nbPays, 0);
-    problem.CoutDeDefaillanceEnReserve.assign(nbPays, 0);
 
     problem.NumeroDeContrainteEnergieHydraulique.assign(nbPays, 0);
     problem.NumeroDeContrainteMinEnergieHydraulique.assign(nbPays, 0);
diff --git a/src/solver/simulation/sim_calcul_economique.cpp b/src/solver/simulation/sim_calcul_economique.cpp
index b6984936aa..f31d1e4523 100644
--- a/src/solver/simulation/sim_calcul_economique.cpp
+++ b/src/solver/simulation/sim_calcul_economique.cpp
@@ -152,8 +152,6 @@ void SIM_InitialisationProblemeHebdo(Data::Study& study,
 
         problem.CoutDeDefaillanceNegative[i] = area.thermal.spilledEnergyCost;
 
-        problem.CoutDeDefaillanceEnReserve[i] = area.thermal.unsuppliedEnergyCost;
-
         problem.DefaillanceNegativeUtiliserPMinThermique[i] = (anoOtherDispatchPower
                                                                & area.nodalOptimization)
                                                               != 0;