diff --git a/Thread.cc b/Thread.cc
index d5f9dc0..739fd60 100644
--- a/Thread.cc
+++ b/Thread.cc
@@ -90,6 +90,11 @@ namespace Alepha::Hydrogen::detail::Thread_m
 		state()->interruption_point();
 	}
 
+	static auto init= Utility::enroll <=[]
+	{
+		state()= std::make_shared< ThreadState >();
+	};
+
 	struct Thread::Impl
 	{
 		std::thread thr;