diff --git a/app/(main)/devis/[id]/convert/page.tsx b/app/(main)/devis/[id]/convert/page.tsx
index 0df6253..bcb2250 100644
--- a/app/(main)/devis/[id]/convert/page.tsx
+++ b/app/(main)/devis/[id]/convert/page.tsx
@@ -359,7 +359,7 @@ const ConvertDevisPage = () => {
                         <Calendar
                             id="dateEcheance"
                             value={facture.dateEcheance ? new Date(facture.dateEcheance) : new Date()}
-                            onChange={(e) => setFacture(prev => ({ ...prev, dateEcheance: e.value || new Date() }))}
+                            onChange={(e) => setFacture(prev => ({ ...prev, dateEcheance: e.value?.toISOString() || new Date().toISOString() }))}
                             className="w-full"
                             dateFormat="dd/mm/yy"
                         />