diff --git a/src/solver/utils/ortools_quadratic_wrapper.cpp b/src/solver/utils/ortools_quadratic_wrapper.cpp
index 6661d87817..025dd81d7b 100644
--- a/src/solver/utils/ortools_quadratic_wrapper.cpp
+++ b/src/solver/utils/ortools_quadratic_wrapper.cpp
@@ -248,6 +248,8 @@ void ProcessSolveResult(PROBLEME_ANTARES_A_RESOUDRE* ProblemeAResoudre,
     }
     else
     {
+        Antares::logs.warning() << "Quadratic optimization failed: "
+                                << resultStatus.status().ToString();
         ProblemeAResoudre->ExistenceDUneSolution = NON_PI;
         FillWithNaN(ProblemeAResoudre->X);
         FillWithNaN(ProblemeAResoudre->AdresseOuPlacerLaValeurDesVariablesOptimisees);