diff --git a/ethcore/src/miner/miner.rs b/ethcore/src/miner/miner.rs
index 18202b1f2..e539c7f0e 100644
--- a/ethcore/src/miner/miner.rs
+++ b/ethcore/src/miner/miner.rs
@@ -128,14 +128,13 @@ impl Miner {
 			transaction_queue: Mutex::new(TransactionQueue::with_limits(options.tx_queue_size, options.tx_gas_limit)),
 			sealing_enabled: AtomicBool::new(options.force_sealing || !options.new_work_notify.is_empty()),
 			next_allowed_reseal: Mutex::new(Instant::now()),
-			options: options,
 			sealing_block_last_request: Mutex::new(0),
 			sealing_work: Mutex::new(UsingQueue::new(options.work_queue_size)),
+			options: options,
 			gas_range_target: RwLock::new((U256::zero(), U256::zero())),
 			author: RwLock::new(Address::default()),
 			extra_data: RwLock::new(Vec::new()),
 			accounts: accounts,
-			options: options,
 			spec: spec,
 			work_poster: work_poster,
 		})
diff --git a/rpc/src/v1/impls/eth.rs b/rpc/src/v1/impls/eth.rs
index 05dc89564..8bfc661e3 100644
--- a/rpc/src/v1/impls/eth.rs
+++ b/rpc/src/v1/impls/eth.rs
@@ -498,7 +498,7 @@ impl<C, S, M, EM> Eth for EthClient<C, S, M, EM> where
 					let pow_hash = b.hash();
 					let target = Ethash::difficulty_to_boundary(b.block().header().difficulty());
 					let seed_hash = &self.seed_compute.lock().unwrap().get_seedhash(b.block().header().number());
-					to_value(&(pow_hash, H256::from_slice(&seed_hash[..]), target))
+					to_value(&(pow_hash, H256::from_slice(&seed_hash[..]), target, &U256::from(b.block().header().number())))
 				}).unwrap_or(Err(Error::internal_error()))	// no work found.
 			},
 			_ => Err(Error::invalid_params())