diff --git a/backend/tests/test_worker/test_github_link.py b/backend/tests/test_worker/test_github_link.py
index 0e9cff24..c50af5c2 100644
--- a/backend/tests/test_worker/test_github_link.py
+++ b/backend/tests/test_worker/test_github_link.py
@@ -116,7 +116,7 @@ def test_completed_persists_mapped_result_content(
             patch(
                 "app.services.intelligence.github_link_service.fetch_contribution_calendar",
                 new_callable=AsyncMock,
-                return_value=MagicMock(),
+                return_value=None,
             ),
             patch("app.services.progress_service.set_progress", new_callable=AsyncMock),
             patch(