diff --git a/application/bookmark/BookmarkFileService.php b/application/bookmark/BookmarkFileService.php
index 0df2f47f..3ea98a45 100644
--- a/application/bookmark/BookmarkFileService.php
+++ b/application/bookmark/BookmarkFileService.php
@@ -106,7 +106,7 @@ class BookmarkFileService implements BookmarkServiceInterface
             && $first->isPrivate()
             && (empty($privateKey) || $privateKey !== $first->getAdditionalContentEntry('private_key'))
         ) {
-            throw new Exception('Not authorized');
+            throw new BookmarkNotFoundException();
         }
 
         return $first;
diff --git a/tests/bookmark/BookmarkFileServiceTest.php b/tests/bookmark/BookmarkFileServiceTest.php
index 8e0ff8dd..f619aff3 100644
--- a/tests/bookmark/BookmarkFileServiceTest.php
+++ b/tests/bookmark/BookmarkFileServiceTest.php
@@ -886,8 +886,8 @@ class BookmarkFileServiceTest extends TestCase
      */
     public function testFilterHashPrivateWhileLoggedOut()
     {
-        $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('Not authorized');
+        $this->expectException(BookmarkNotFoundException::class);
+        $this->expectExceptionMessage('The link you are trying to reach does not exist or has been deleted');
 
         $hash = smallHash('20141125_084734' . 6);