diff --git a/tests/unit_tests/core/test_taskmgr.py b/tests/unit_tests/core/test_taskmgr.py
index 4c23fb2ac..3477478bb 100644
--- a/tests/unit_tests/core/test_taskmgr.py
+++ b/tests/unit_tests/core/test_taskmgr.py
@@ -375,6 +375,7 @@ class TestTaskWrapper:
         try:
             await wrapper.task
         except ValueError:
+            # Expected failure: task must complete in failed state for public serialization checks.
             pass
 
         result = wrapper.to_public_dict()