diff --git a/app/Transformers/UserTransformer.php b/app/Transformers/UserTransformer.php
index 3bd96346f4..5d10e45b42 100644
--- a/app/Transformers/UserTransformer.php
+++ b/app/Transformers/UserTransformer.php
@@ -34,7 +34,7 @@ use Log;
 class UserTransformer extends AbstractTransformer
 {
     /** @var UserRepositoryInterface */
-    private $repository;
+    private UserRepositoryInterface $repository;
 
     /**
      * Transform user.
@@ -45,6 +45,7 @@ class UserTransformer extends AbstractTransformer
      */
     public function transform(User $user): array
     {
+        $this->repository = $this->repository ?? app(UserRepositoryInterface::class);
         return [
             'id'           => (int)$user->id,
             'created_at'   => $user->created_at->toAtomString(),