diff --git a/libethereum/Client.cpp b/libethereum/Client.cpp
index 34bbbfaf3..86b745141 100644
--- a/libethereum/Client.cpp
+++ b/libethereum/Client.cpp
@@ -269,9 +269,11 @@ void Client::killChain()
 	{
 		WriteGuard l(x_postMine);
 		WriteGuard l2(x_preMine);
+		WriteGuard l3(x_working);
 
 		m_preMine = State();
 		m_postMine = State();
+		m_working = State();
 
 		m_stateDB = OverlayDB();
 		m_stateDB = State::openDB(Defaults::dbPath(), WithExisting::Kill);
@@ -284,6 +286,7 @@ void Client::killChain()
 	if (auto h = m_host.lock())
 		h->reset();
 
+	startedWorking();
 	doWork();
 
 	startWorking();