diff --git a/frontend-prep/src/pages/User/ConsultationHistorique.tsx b/frontend-prep/src/pages/User/ConsultationHistorique.tsx
index c01f242c..836d8134 100644
--- a/frontend-prep/src/pages/User/ConsultationHistorique.tsx
+++ b/frontend-prep/src/pages/User/ConsultationHistorique.tsx
@@ -317,18 +317,16 @@ function ConsultationHistorique() {
                                         </div>
                                         {pool.eligible_configs.length > 0 && (
                                             <div className="reward-eligible-cats">
-                                                {pool.eligible_configs.map((cfg) =>
-                                                    cfg.all_products ? (
-                                                        <span key={cfg.category} className="reward-eligible-cat">
+                                                {pool.eligible_configs.flatMap((cfg) =>
+                                                    cfg.all_products
+                                                        ? [<span key={cfg.category} className="reward-eligible-cat">
                                                             {cfg.category}{cfg.amount > 0 ? ` — ${cfg.amount}€` : ""}
-                                                        </span>
-                                                    ) : (
-                                                        cfg.product_names.map((name) => (
-                                                            <span key={name} className="reward-eligible-cat">
+                                                          </span>]
+                                                        : (cfg.product_names ?? []).map((name) => (
+                                                            <span key={`${cfg.category}-${name}`} className="reward-eligible-cat">
                                                                 {name}
                                                             </span>
                                                         ))
-                                                    )
                                                 )}
                                             </div>
                                         )}