diff --git a/tests/test_cleanup.py b/tests/test_cleanup.py
index ab4adf0..6841535 100644
--- a/tests/test_cleanup.py
+++ b/tests/test_cleanup.py
@@ -1,3 +1,4 @@
+import json
 import os
 import sys
 import unittest
@@ -118,8 +119,8 @@ async def test_orphan_deletion(temp_dirs):
 
     mock_redis = AsyncMock()
     mock_redis.keys.return_value = ["translation:file:job1"]
-    mock_redis.get.return_value = (
-        '{"file_path": "' + str(tracked_file.absolute()) + '"}'
+    mock_redis.get.return_value = json.dumps(
+        {"file_path": str(tracked_file.absolute())}
     )
 
     with _get_redis_patcher(mock_redis):