diff --git a/Cargo.toml b/Cargo.toml
index 872e1e675..eef261317 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,7 @@ ethash = { path = "ethash" }
 num_cpus = "0.2"
 clippy = "0.0.37"
 crossbeam = "0.1.5"
+lazy_static = "0.1"
 
 [features]
 jit = ["evmjit"]
diff --git a/src/lib.rs b/src/lib.rs
index 8dd02b3bc..e084635dd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -91,6 +91,8 @@ extern crate evmjit;
 #[macro_use]
 extern crate ethcore_util as util;
 extern crate crossbeam;
+#[macro_use]
+extern crate lazy_static;
 
 // NOTE: Add doc parser exception for these pub declarations.
 
diff --git a/src/spec.rs b/src/spec.rs
index 77073eedd..4d342f713 100644
--- a/src/spec.rs
+++ b/src/spec.rs
@@ -77,6 +77,10 @@ pub struct Spec {
 	pub gas_used: U256,
 	/// TODO [Gav Wood] Please document me
 	pub timestamp: u64,
+	/// Transactions root of the genesis block. Should be SHA3_NULL_RLP.
+	pub transactions_root: H256,
+	/// Receipts root of the genesis block. Should be SHA3_NULL_RLP.
+	pub receipts_root: H256,
 	/// TODO [arkpar] Please document me
 	pub extra_data: Bytes,
 	/// TODO [Gav Wood] Please document me
@@ -120,11 +124,11 @@ impl Spec {
 			timestamp: self.timestamp,
 			number: 0,
 			author: self.author.clone(),
-			transactions_root: SHA3_NULL_RLP.clone(),
+			transactions_root: self.transactions_root.clone(),
 			uncles_hash: RlpStream::new_list(0).out().sha3(),
 			extra_data: self.extra_data.clone(),
 			state_root: self.state_root().clone(),
-			receipts_root: SHA3_NULL_RLP.clone(),
+			receipts_root: self.receipts_root.clone(),	
 			log_bloom: H2048::new().clone(),
 			gas_used: self.gas_used.clone(),
 			gas_limit: self.gas_limit.clone(),
@@ -172,6 +176,8 @@ impl Spec {
 		};
 		
 		self.parent_hash = H256::from_json(&genesis["parentHash"]);
+		self.transactions_root = genesis.find("transactionsTrie").and_then(|_| Some(H256::from_json(&genesis["transactionsTrie"]))).unwrap_or(SHA3_NULL_RLP.clone());
+		self.receipts_root = genesis.find("receiptTrie").and_then(|_| Some(H256::from_json(&genesis["receiptTrie"]))).unwrap_or(SHA3_NULL_RLP.clone());
 		self.author = Address::from_json(&genesis["coinbase"]);
 		self.difficulty = U256::from_json(&genesis["difficulty"]);
 		self.gas_limit = U256::from_json(&genesis["gasLimit"]);
@@ -248,6 +254,8 @@ impl FromJson for Spec {
 			gas_limit: U256::from_str(&genesis["gasLimit"].as_string().unwrap()[2..]).unwrap(),
 			gas_used: U256::from(0u8),
 			timestamp: u64::from_str(&genesis["timestamp"].as_string().unwrap()[2..]).unwrap(),
+			transactions_root: SHA3_NULL_RLP.clone(),
+			receipts_root: SHA3_NULL_RLP.clone(),
 			extra_data: genesis["extraData"].as_string().unwrap()[2..].from_hex().unwrap(),
 			genesis_state: state,
 			seal_fields: seal_fields,
diff --git a/src/tests/chain.rs b/src/tests/chain.rs
index 48b176508..e260deddc 100644
--- a/src/tests/chain.rs
+++ b/src/tests/chain.rs
@@ -13,19 +13,22 @@ pub enum ChainEra {
 	Homestead,
 }
 
-fn setup_log() {
-	let mut builder = LogBuilder::new();
-	builder.filter(None, LogLevelFilter::Info);
+lazy_static! {
+	static ref LOG_DUMMY: bool = {
+		let mut builder = LogBuilder::new();
+		builder.filter(None, LogLevelFilter::Info);
 
-	if env::var("RUST_LOG").is_ok() {
-		builder.parse(&env::var("RUST_LOG").unwrap());
-	}
+		if env::var("RUST_LOG").is_ok() {
+			builder.parse(&env::var("RUST_LOG").unwrap());
+		}
 
-	builder.init().unwrap();
+		builder.init().unwrap();
+		true
+	};
 }
 
 pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
-	setup_log();
+	let _ = LOG_DUMMY.deref();
 	let json = Json::from_str(::std::str::from_utf8(json_data).unwrap()).expect("Json is invalid");
 	let mut failed = Vec::new();
 
@@ -50,10 +53,13 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
 			spec.set_genesis_state(s);
 			spec.overwrite_genesis(test.find("genesisBlockHeader").unwrap());
 			assert!(spec.is_state_root_valid());
+			let genesis_hash = spec.genesis_header().hash();
+			assert_eq!(genesis_hash, H256::from_json(&test.find("genesisBlockHeader").unwrap()["hash"]));
 
 			let temp = RandomTempPath::new();
 			{
 				let client = Client::new(spec, temp.as_path(), IoChannel::disconnected()).unwrap();
+				assert_eq!(client.chain_info().best_block_hash, genesis_hash);
 				for (b, is_valid) in blocks.into_iter() {
 					if Block::is_good(&b) {
 						let _ = client.import_block(b.clone());