diff --git a/app/(main)/devis/acceptes/page.tsx b/app/(main)/devis/acceptes/page.tsx
index 8c2032d..919192f 100644
--- a/app/(main)/devis/acceptes/page.tsx
+++ b/app/(main)/devis/acceptes/page.tsx
@@ -515,7 +515,7 @@ RECOMMANDATIONS:
                                         <Calendar
                                             id="dateDebut"
                                             value={chantierData.dateDebut}
-                                            onChange={(e) => setChantierData(prev => ({ ...prev, dateDebut: e.value?.toISOString() || new Date().toISOString() }))}
+                                            onChange={(e) => setChantierData(prev => ({ ...prev, dateDebut: e.value || new Date() }))}
                                             dateFormat="dd/mm/yy"
                                             showIcon
                                         />
@@ -526,7 +526,7 @@ RECOMMANDATIONS:
                                         <Calendar
                                             id="dateFinPrevue"
                                             value={chantierData.dateFinPrevue}
-                                            onChange={(e) => setChantierData(prev => ({ ...prev, dateFinPrevue: e.value?.toISOString() || new Date().toISOString() }))}
+                                            onChange={(e) => setChantierData(prev => ({ ...prev, dateFinPrevue: e.value || new Date() }))}
                                             dateFormat="dd/mm/yy"
                                             showIcon
                                             minDate={chantierData.dateDebut}