diff --git a/backend/app/Controllers/ElementController.php b/backend/app/Controllers/ElementController.php
index 7d23213..9e61720 100644
--- a/backend/app/Controllers/ElementController.php
+++ b/backend/app/Controllers/ElementController.php
@@ -14,6 +14,11 @@ class ElementController
     public function show(int $id): JsonResponse
     {
         $element = $this->elementRepository->find($id);
+        if ($element === null) {
+            return new JsonResponse([
+                'error' => 'Element not found',
+            ], 404);
+        }
 
         return new JsonResponse([
             'element' => [