diff --git a/app/Models/Calendrier.php b/app/Models/Calendrier.php
index 5669c9c..da1dee5 100644
--- a/app/Models/Calendrier.php
+++ b/app/Models/Calendrier.php
@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Model;
 
 class Calendrier extends Model
@@ -54,6 +55,9 @@ class Calendrier extends Model
      */
     public function isPublished(): bool
     {
-        return now()->betweenIncluded($this->calendrier_startdate, $this->calendrier_enddate->endOfDay());
+        return now()->betweenIncluded(
+            Carbon::parse($this->calendrier_startdate),
+            Carbon::parse($this->calendrier_enddate)->endOfDay()
+        );
     }
 }