diff --git a/sync/src/lib.rs b/sync/src/lib.rs
index def7775d3..3f899c261 100644
--- a/sync/src/lib.rs
+++ b/sync/src/lib.rs
@@ -44,12 +44,12 @@
 //! 	let mut service = NetworkService::new(NetworkConfiguration::new()).unwrap();
 //! 	service.start().unwrap();
 //! 	let dir = env::temp_dir();
-//! 	let miner = Miner::new(false, ethereum::new_frontier(), None);
+//! 	let miner = Miner::new(false, ethereum::new_frontier(true), None);
 //! 	let client = Client::new(
 //!			ClientConfig::default(),
 //!			ethereum::new_frontier(true),
 //!			&dir,
-//!			Arc::new(miner),
+//!			miner,
 //!			service.io().channel()
 //!		).unwrap();
 //! 	let sync = EthSync::new(SyncConfig::default(), client);