diff --git a/ethcore/src/client/client.rs b/ethcore/src/client/client.rs
index 6ee1b88d5..caa92db97 100644
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -324,7 +324,6 @@ impl<V> Client<V> where V: Verifier {
 					invalid: invalid_blocks,
 					enacted: enacted,
 					retracted: retracted,
-					is_last: self.queue_info().is_empty()
 				})).unwrap();
 			}
 		}
diff --git a/ethcore/src/service.rs b/ethcore/src/service.rs
index a46581e3c..bcfe7724f 100644
--- a/ethcore/src/service.rs
+++ b/ethcore/src/service.rs
@@ -35,8 +35,6 @@ pub enum SyncMessage {
 		retracted: Vec<H256>,
 		/// Hashes of blocks that are now included in cannonical chain
 		enacted: Vec<H256>,
-		/// Set when blockqueue is empty
-		is_last: bool,
 	},
 	/// Best Block Hash in chain has been changed
 	NewChainHead,
diff --git a/sync/src/chain.rs b/sync/src/chain.rs
index c94e89445..b68b2b250 100644
--- a/sync/src/chain.rs
+++ b/sync/src/chain.rs
@@ -215,8 +215,6 @@ pub struct ChainSync {
 	network_id: U256,
 	/// Miner
 	miner: Arc<Miner>,
-	/// Fully-synced flag
-	is_fully_synced: bool,
 }
 
 type RlpResponseResult = Result<Option<(PacketId, RlpStream)>, PacketDecodeError>;
@@ -243,7 +241,6 @@ impl ChainSync {
 			max_download_ahead_blocks: max(MAX_HEADERS_TO_REQUEST, config.max_download_ahead_blocks),
 			network_id: config.network_id,
 			miner: miner,
-			is_fully_synced: true,
 		}
 	}
 
@@ -948,7 +945,7 @@ impl ChainSync {
 	/// Called when peer sends us new transactions
 	fn on_peer_transactions(&mut self, io: &mut SyncIo, peer_id: PeerId, r: &UntrustedRlp) -> Result<(), PacketDecodeError> {
 		// accepting transactions once only fully synced
-		if !self.is_fully_synced {
+		if !io.is_chain_queue_empty() {
 			return Ok(());
 		}
 
@@ -1296,10 +1293,8 @@ impl ChainSync {
 	}
 
 	/// called when block is imported to chain, updates transactions queue and propagates the blocks
-	pub fn chain_new_blocks(&mut self, io: &mut SyncIo, imported: &[H256], invalid: &[H256], enacted: &[H256], retracted: &[H256], is_last: bool) {
-		// Set the state in which it can accept transactions from the net
-		self.is_fully_synced = is_last;
-		if self.is_fully_synced {
+	pub fn chain_new_blocks(&mut self, io: &mut SyncIo, imported: &[H256], invalid: &[H256], enacted: &[H256], retracted: &[H256]) {
+		if io.is_chain_queue_empty() {
 			// Notify miner
 			self.miner.chain_new_blocks(io.chain(), imported, invalid, enacted, retracted);
 		}
@@ -1662,10 +1657,10 @@ mod tests {
 		let mut io = TestIo::new(&mut client, &mut queue, None);
 
 		// when
-		sync.chain_new_blocks(&mut io, &[], &[], &[], &good_blocks, true);
+		sync.chain_new_blocks(&mut io, &[], &[], &[], &good_blocks);
 		assert_eq!(sync.miner.status().transactions_in_future_queue, 0);
 		assert_eq!(sync.miner.status().transactions_in_pending_queue, 1);
-		sync.chain_new_blocks(&mut io, &good_blocks, &[], &[], &retracted_blocks, true);
+		sync.chain_new_blocks(&mut io, &good_blocks, &[], &[], &retracted_blocks);
 
 
 		// then
@@ -1690,10 +1685,10 @@ mod tests {
 		let mut io = TestIo::new(&mut client, &mut queue, None);
 
 		// when
-		sync.chain_new_blocks(&mut io, &[], &[], &[], &good_blocks, false);
+		sync.chain_new_blocks(&mut io, &[], &[], &[], &good_blocks);
 		assert_eq!(sync.miner.status().transactions_in_future_queue, 0);
 		assert_eq!(sync.miner.status().transactions_in_pending_queue, 0);
-		sync.chain_new_blocks(&mut io, &good_blocks, &[], &[], &retracted_blocks, false);
+		sync.chain_new_blocks(&mut io, &good_blocks, &[], &[], &retracted_blocks);
 
 		// then
 		let status = sync.miner.status();
diff --git a/sync/src/io.rs b/sync/src/io.rs
index 00ee49be4..84697a021 100644
--- a/sync/src/io.rs
+++ b/sync/src/io.rs
@@ -37,6 +37,10 @@ pub trait SyncIo {
 	fn peer_info(&self, peer_id: PeerId) -> String {
 		peer_id.to_string()
 	}
+	/// Returns if the chain block queue empty
+	fn is_chain_queue_empty(&self) -> bool {
+		self.chain().queue_info().is_empty()
+	}
 }
 
 /// Wraps `NetworkContext` and the blockchain client
diff --git a/sync/src/lib.rs b/sync/src/lib.rs
index 8ab6a23e9..a4f6eff38 100644
--- a/sync/src/lib.rs
+++ b/sync/src/lib.rs
@@ -166,9 +166,9 @@ impl NetworkProtocolHandler<SyncMessage> for EthSync {
 
 	fn message(&self, io: &NetworkContext<SyncMessage>, message: &SyncMessage) {
 		match *message {
-			SyncMessage::NewChainBlocks { ref imported, ref invalid, ref enacted, ref retracted, is_last } => {
+			SyncMessage::NewChainBlocks { ref imported, ref invalid, ref enacted, ref retracted } => {
 				let mut sync_io = NetSyncIo::new(io, self.chain.deref());
-				self.sync.write().unwrap().chain_new_blocks(&mut sync_io, imported, invalid, enacted, retracted, is_last);
+				self.sync.write().unwrap().chain_new_blocks(&mut sync_io, imported, invalid, enacted, retracted);
 			},
 			SyncMessage::NewChainHead => {
 				let mut sync_io = NetSyncIo::new(io, self.chain.deref());
diff --git a/sync/src/tests/helpers.rs b/sync/src/tests/helpers.rs
index 42ef728b9..b3e62ccc6 100644
--- a/sync/src/tests/helpers.rs
+++ b/sync/src/tests/helpers.rs
@@ -168,6 +168,6 @@ impl TestNet {
 
 	pub fn trigger_chain_new_blocks(&mut self, peer_id: usize) {
 		let mut peer = self.peer_mut(peer_id);
-		peer.sync.chain_new_blocks(&mut TestIo::new(&mut peer.chain, &mut peer.queue, None), &[], &[], &[], &[], true);
+		peer.sync.chain_new_blocks(&mut TestIo::new(&mut peer.chain, &mut peer.queue, None), &[], &[], &[], &[]);
 	}
 }