diff --git a/source/mijin/async/coroutine.hpp b/source/mijin/async/coroutine.hpp
index f659b38..ca4d843 100644
--- a/source/mijin/async/coroutine.hpp
+++ b/source/mijin/async/coroutine.hpp
@@ -335,6 +335,7 @@ struct TaskPromise : impl::TaskReturn<typename TTraits::result_t, TaskPromise<TT
 };
 
 template<typename TResult>
+[[nodiscard("Tasks should either we awaited or added to a loop.")]]
 class TaskBase
 {
 public: