diff --git a/skills/calendar/scripts/cal_tool.py b/skills/calendar/scripts/cal_tool.py
index 36f41e0..1c1ed96 100644
--- a/skills/calendar/scripts/cal_tool.py
+++ b/skills/calendar/scripts/cal_tool.py
@@ -593,7 +593,7 @@ def _format_todo_digest(todos):
             days = _days_until(due)
             urgency = _urgency_label(days)
             desc = t.get("description") or ""
-            is_completed = t.get("is_completed", False)
+            is_completed = t.get("completed", False)
 
             if is_completed:
                 line = f"  • ✅ {summary} (已完成)"