diff --git a/app/(main)/devis/[id]/duplicate/page.tsx b/app/(main)/devis/[id]/duplicate/page.tsx
index 1ee8c02..861affe 100644
--- a/app/(main)/devis/[id]/duplicate/page.tsx
+++ b/app/(main)/devis/[id]/duplicate/page.tsx
@@ -317,7 +317,7 @@ const DuplicateDevisPage = () => {
                                 <Calendar
                                     id="dateEmission"
                                     value={new Date(newDevis.dateEmission)}
-                                    onChange={(e) => setNewDevis(prev => ({ ...prev, dateEmission: e.value || new Date() }))}
+                                    onChange={(e) => setNewDevis(prev => ({ ...prev, dateEmission: e.value?.toISOString() || new Date().toISOString() }))}
                                     className="w-full"
                                     dateFormat="dd/mm/yy"
                                 />
@@ -328,7 +328,7 @@ const DuplicateDevisPage = () => {
                                 <Calendar
                                     id="dateValidite"
                                     value={new Date(newDevis.dateValidite)}
-                                    onChange={(e) => setNewDevis(prev => ({ ...prev, dateValidite: e.value || new Date() }))}
+                                    onChange={(e) => setNewDevis(prev => ({ ...prev, dateValidite: e.value?.toISOString() || new Date().toISOString() }))}
                                     className="w-full"
                                     dateFormat="dd/mm/yy"
                                 />