diff --git a/test/unit/tool_shed/_util.py b/test/unit/tool_shed/_util.py
index cf4f82255d0c..4ef21ab5f322 100644
--- a/test/unit/tool_shed/_util.py
+++ b/test/unit/tool_shed/_util.py
@@ -133,7 +133,7 @@ def repository_fixture(app: ToolShedApp, user: User, name: str, category: Option
         type,
         description,
         long_description,
-        user.id,
+        user,
         category_ids=category_ids,
         remote_repository_url=None,
         homepage_url=None,