diff --git a/tests/unit/config/test_subscription_resolution.py b/tests/unit/config/test_subscription_resolution.py
index 66d9fa15..9d21bedc 100644
--- a/tests/unit/config/test_subscription_resolution.py
+++ b/tests/unit/config/test_subscription_resolution.py
@@ -22,8 +22,8 @@ def _ensure_resolved_yaml(
     expected_out = expected_json(out, expected_out_filename)
 
     if resolution_level > ResolutionLevel.ORIGINAL:
-        expected_out["output_options"]["output_directory"] = str(
-            os.path.join(output_directory, sub.name)
+        expected_out["output_options"]["output_directory"] = (
+            f"{output_directory}{os.path.sep}{sub.name}"
         )
     if "tv_show_directory" in expected_out["overrides"]:
         expected_out["overrides"]["tv_show_directory"] = output_directory