diff --git a/src/solver/optimisation/CMakeLists.txt b/src/solver/optimisation/CMakeLists.txt
index 2e3f257932..cbf8f33fc3 100644
--- a/src/solver/optimisation/CMakeLists.txt
+++ b/src/solver/optimisation/CMakeLists.txt
@@ -20,7 +20,6 @@ set(RTESOLVER_OPT
         opt_construction_variables_optimisees_quadratique.cpp
         opt_decompte_variables_et_contraintes.cpp
 		opt_decompte_variables_et_contraintes.cpp
-        opt_construction_matrice_des_contraintes_outils.cpp
         opt_gestion_des_bornes_cas_lineaire.cpp
         opt_verification_presence_reserve_jmoins1.cpp
         opt_init_contraintes_hydrauliques.cpp
diff --git a/src/solver/optimisation/include/antares/solver/optimisation/opt_fonctions.h b/src/solver/optimisation/include/antares/solver/optimisation/opt_fonctions.h
index 8aad20d799..9d13015286 100644
--- a/src/solver/optimisation/include/antares/solver/optimisation/opt_fonctions.h
+++ b/src/solver/optimisation/include/antares/solver/optimisation/opt_fonctions.h
@@ -94,11 +94,6 @@ void OPT_RestaurerLesDonnees(PROBLEME_HEBDO*);
 void OPT_CalculerLesPminThermiquesEnFonctionDeMUTetMDT(PROBLEME_HEBDO*);
 double OPT_CalculerAireMaxPminJour(int, int, int, int, std::vector<int>&, std::vector<int>&);
 
-void OPT_ChargerLaContrainteDansLaMatriceDesContraintes(PROBLEME_ANTARES_A_RESOUDRE*,
-                                                        std::vector<double>&,
-                                                        std::vector<int>&,
-                                                        int,
-                                                        char);
 void OPT_ChainagesDesIntercoPartantDUnNoeud(PROBLEME_HEBDO*);
 
 void OPT_AllocateFromNumberOfVariableConstraints(PROBLEME_ANTARES_A_RESOUDRE* ProblemeAResoudre,
diff --git a/src/solver/optimisation/opt_construction_matrice_des_contraintes_outils.cpp b/src/solver/optimisation/opt_construction_matrice_des_contraintes_outils.cpp
deleted file mode 100644
index 80ef6f809c..0000000000
--- a/src/solver/optimisation/opt_construction_matrice_des_contraintes_outils.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
-** Copyright 2007-2024, RTE (https://www.rte-france.com)
-** See AUTHORS.txt
-** SPDX-License-Identifier: MPL-2.0
-** This file is part of Antares-Simulator,
-** Adequacy and Performance assessment for interconnected energy networks.
-**
-** Antares_Simulator is free software: you can redistribute it and/or modify
-** it under the terms of the Mozilla Public Licence 2.0 as published by
-** the Mozilla Foundation, either version 2 of the License, or
-** (at your option) any later version.
-**
-** Antares_Simulator is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** Mozilla Public Licence 2.0 for more details.
-**
-** You should have received a copy of the Mozilla Public Licence 2.0
-** along with Antares_Simulator. If not, see <https://opensource.org/license/mpl-2-0/>.
-*/
-
-#include "antares/solver/optimisation/opt_fonctions.h"
-#include "antares/solver/optimisation/opt_structure_probleme_a_resoudre.h"
-#include "antares/solver/simulation/sim_structure_donnees.h"
-
-void OPT_ChargerLaContrainteDansLaMatriceDesContraintes(
-  PROBLEME_ANTARES_A_RESOUDRE* ProblemeAResoudre,
-  std::vector<double>& Pi,
-  std::vector<int>& Colonne,
-  int NombreDeTermesDeLaContrainte,
-  char SensContrainte)
-{
-    int& nombreDeTermes = ProblemeAResoudre->NombreDeTermesDansLaMatriceDesContraintes;
-    int& nombreDeContraintes = ProblemeAResoudre->NombreDeContraintes;
-
-    ProblemeAResoudre->IndicesDebutDeLigne[nombreDeContraintes] = nombreDeTermes;
-    for (int i = 0; i < NombreDeTermesDeLaContrainte; i++)
-    {
-        ProblemeAResoudre->CoefficientsDeLaMatriceDesContraintes[nombreDeTermes] = Pi[i];
-        ProblemeAResoudre->IndicesColonnes[nombreDeTermes] = Colonne[i];
-        nombreDeTermes++;
-        if (nombreDeTermes == ProblemeAResoudre->NombreDeTermesAllouesDansLaMatriceDesContraintes)
-        {
-            OPT_AugmenterLaTailleDeLaMatriceDesContraintes(ProblemeAResoudre);
-        }
-    }
-    ProblemeAResoudre->NombreDeTermesDesLignes[nombreDeContraintes] = NombreDeTermesDeLaContrainte;
-
-    ProblemeAResoudre->Sens[nombreDeContraintes] = SensContrainte;
-    nombreDeContraintes++;
-
-    return;
-}