diff --git a/ethcore/src/client/client.rs b/ethcore/src/client/client.rs
index bf318aeda..0e0b292f9 100644
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -891,12 +891,9 @@ impl BlockChainClient for Client {
 			let mut mode = self.mode.lock();
 			*mode = new_mode.clone().into();
 			trace!(target: "mode", "Mode now {:?}", &*mode);
-			match *self.on_mode_change.lock() {
-				Some(ref mut f) => {
-					trace!(target: "mode", "Making callback...");
-					f(&*mode)
-				},
-				_ => {}
+			if let Some(ref mut f) = *self.on_mode_change.lock() {
+				trace!(target: "mode", "Making callback...");
+				f(&*mode)
 			}
 		}
 		match new_mode {
diff --git a/ethcore/src/miner/miner.rs b/ethcore/src/miner/miner.rs
index df55e7367..5530ac462 100644
--- a/ethcore/src/miner/miner.rs
+++ b/ethcore/src/miner/miner.rs
@@ -38,7 +38,6 @@ use miner::price_info::PriceInfo;
 use miner::local_transactions::{Status as LocalTransactionStatus};
 use header::BlockNumber;
 
-
 /// Different possible definitions for pending transaction set.
 #[derive(Debug, PartialEq)]
 pub enum PendingSet {
diff --git a/ethcore/src/miner/transaction_queue.rs b/ethcore/src/miner/transaction_queue.rs
index 00fe47243..bfbd3fade 100644
--- a/ethcore/src/miner/transaction_queue.rs
+++ b/ethcore/src/miner/transaction_queue.rs
@@ -2137,12 +2137,11 @@ mod test {
 		let mut txq = TransactionQueue::with_limits(PrioritizationStrategy::GasPriceOnly, 100, default_gas_val() * U256::from(2), !U256::zero());
 		let (tx1, tx2) = new_tx_pair_default(U256::from(1), U256::from(1));
 		let (tx3, tx4) = new_tx_pair_default(U256::from(1), U256::from(2));
-		let (tx5, tx6) = new_tx_pair_default(U256::from(1), U256::from(2));
+		let (tx5, _) = new_tx_pair_default(U256::from(1), U256::from(2));
 		txq.add(tx1.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		txq.add(tx2.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		// Not accepted because of limit
 		txq.add(tx5.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap_err();
-		txq.add(tx6.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap_err();
 		txq.add(tx3.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		txq.add(tx4.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 4);
diff --git a/js/src/views/Dapps/builtin.json b/js/src/views/Dapps/builtin.json
index 71f3cd6ed..a2959bb18 100644
--- a/js/src/views/Dapps/builtin.json
+++ b/js/src/views/Dapps/builtin.json
@@ -49,5 +49,4 @@
     "version": "1.0.0",
     "secure": true
   }
-
 ]
diff --git a/rpc/src/v1/types/transaction.rs b/rpc/src/v1/types/transaction.rs
index 7379a3b19..45f1cdd5e 100644
--- a/rpc/src/v1/types/transaction.rs
+++ b/rpc/src/v1/types/transaction.rs
@@ -132,7 +132,6 @@ impl Serialize for LocalTransactionStatus {
 	}
 }
 
-
 impl From<LocalizedTransaction> for Transaction {
 	fn from(t: LocalizedTransaction) -> Transaction {
 		let signature = t.signature();
diff --git a/sync/build.rs b/sync/build.rs
index db881e328..c465d5e34 100644
--- a/sync/build.rs
+++ b/sync/build.rs
@@ -18,5 +18,4 @@ extern crate ethcore_ipc_codegen;
 
 fn main() {
 	ethcore_ipc_codegen::derive_ipc_cond("src/api.rs", cfg!(feature="ipc")).unwrap();
-	ethcore_ipc_codegen::derive_ipc_cond("src/transactions_stats.rs", cfg!(feature="ipc")).unwrap();
 }