diff --git a/json/src/spec/genesis.rs b/json/src/spec/genesis.rs
index 6f69f8c14..120df4fc1 100644
--- a/json/src/spec/genesis.rs
+++ b/json/src/spec/genesis.rs
@@ -58,7 +58,15 @@ pub struct Genesis {
 #[cfg(test)]
 mod tests {
 	use serde_json;
+	use bytes::Bytes;
+	use uint::Uint;
+	use util::U256;
+	use hash::{H64, H256, Address};
+	use util::hash::H160;
+	use util::{H64 as Eth64, H256 as Eth256};
 	use spec::genesis::Genesis;
+	use spec::{Ethereum, Seal};
+	use std::str::FromStr;
 
 	#[test]
 	fn genesis_deserialization() {
@@ -71,14 +79,29 @@ mod tests {
 					"nonce": "0x00006d6f7264656e"
 				}
 			},
-			"author": "0x0000000000000000000000000000000000000000",
-			"timestamp": "0x00",
-			"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+			"author": "0x1000000000000000000000000000000000000001",
+			"timestamp": "0x07",
+			"parentHash": "0x9000000000000000000000000000000000000000000000000000000000000000",
 			"extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
 			"gasLimit": "0x1388",
 			"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 		}"#;
-		let _deserialized: Genesis = serde_json::from_str(s).unwrap();
-		// TODO: validate all fields
+		let deserialized: Genesis = serde_json::from_str(s).unwrap();
+		assert_eq!(deserialized, Genesis {
+			seal: Seal::Ethereum(Ethereum {
+				nonce: H64(Eth64::from("0x00006d6f7264656e")),
+				mix_hash: H256(Eth256::from("0x0000000000000000000000000000000000000000000000000000000000000000"))
+			}),
+			difficulty: Uint(U256::from(0x400000000u64)),
+			author: Some(Address(H160::from("0x1000000000000000000000000000000000000001"))),
+			timestamp: Some(Uint(U256::from(0x07))),
+			parent_hash: Some(H256(Eth256::from("0x9000000000000000000000000000000000000000000000000000000000000000"))),
+			gas_limit: Uint(U256::from(0x1388)),
+			transactions_root: None,
+			receipts_root: None,
+			state_root: Some(H256(Eth256::from("0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"))),
+			gas_used: None,
+			extra_data: Some(Bytes::from_str("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa").unwrap()),
+		});
 	}
 }