diff --git a/bchain/coins/bitcore/bitcoreparser.go b/bchain/coins/bitcore/bitcoreparser.go
index 93951cb2..02631f26 100644
--- a/bchain/coins/bitcore/bitcoreparser.go
+++ b/bchain/coins/bitcore/bitcoreparser.go
@@ -80,4 +80,3 @@ func (p *BitcoreParser) PackTx(tx *bchain.Tx, height uint32, blockTime int64) ([
 func (p *BitcoreParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
 	return p.baseparser.UnpackTx(buf)
 }
-
diff --git a/bchain/coins/bitcore/bitcoreparser_test.go b/bchain/coins/bitcore/bitcoreparser_test.go
index 96599a48..5632196d 100644
--- a/bchain/coins/bitcore/bitcoreparser_test.go
+++ b/bchain/coins/bitcore/bitcoreparser_test.go
@@ -6,11 +6,11 @@ import (
 	"blockbook/bchain"
 	"blockbook/bchain/coins/btc"
 	"encoding/hex"
+	"github.com/martinboehm/btcutil/chaincfg"
 	"math/big"
 	"os"
 	"reflect"
 	"testing"
-	"github.com/martinboehm/btcutil/chaincfg"
 )
 
 func TestMain(m *testing.M) {
@@ -77,7 +77,6 @@ func Test_GetAddrDescFromAddress_Mainnet(t *testing.T) {
 	}
 }
 
-
 var (
 	testTx1 bchain.Tx
 
@@ -207,4 +206,3 @@ func Test_UnpackTx(t *testing.T) {
 		})
 	}
 }
-
diff --git a/bchain/coins/bitcore/bitcorerpc.go b/bchain/coins/bitcore/bitcorerpc.go
index 914461de..1766527e 100644
--- a/bchain/coins/bitcore/bitcorerpc.go
+++ b/bchain/coins/bitcore/bitcorerpc.go
@@ -4,8 +4,8 @@ import (
 	"blockbook/bchain"
 	"blockbook/bchain/coins/btc"
 	"encoding/json"
-	"github.com/juju/errors"
 	"github.com/golang/glog"
+	"github.com/juju/errors"
 )
 
 // BitcoreRPC is an interface to JSON-RPC bitcoind service.
@@ -56,7 +56,6 @@ func (b *BitcoreRPC) Initialize() error {
 	return nil
 }
 
-
 // GetBlock returns block with given hash.
 
 func (f *BitcoreRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
@@ -90,7 +89,7 @@ func (f *BitcoreRPC) GetBlock(hash string, height uint32) (*bchain.Block, error)
 	return block, nil
 }
 
- // GetBlockFull returns block with given hash
+// GetBlockFull returns block with given hash
 func (f *BitcoreRPC) GetBlockFull(hash string) (*bchain.Block, error) {
 	glog.V(1).Info("rpc: getblock (verbosity=2) ", hash)
 
@@ -126,9 +125,8 @@ func (f *BitcoreRPC) GetBlockFull(hash string) (*bchain.Block, error) {
 	return &res.Result, nil
 }
 
- // GetTransactionForMempool returns a transaction by the transaction ID.
+// GetTransactionForMempool returns a transaction by the transaction ID.
 // It could be optimized for mempool, i.e. without block time and confirmations
 func (f *BitcoreRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
 	return f.GetTransaction(txid)
 }
-
diff --git a/fiat/fiat_rates.go b/fiat/fiat_rates.go
index a8c3ea7e..e5413575 100644
--- a/fiat/fiat_rates.go
+++ b/fiat/fiat_rates.go
@@ -143,7 +143,7 @@ func (rd *RatesDownloader) findEarliestMarketData() (*time.Time, error) {
 // syncLatest downloads the latest FiatRates data every rd.PeriodSeconds
 func (rd *RatesDownloader) syncLatest() error {
 	timer := time.NewTimer(rd.periodSeconds)
-	var lastTickerRates map[string]float64 = nil
+	var lastTickerRates map[string]float64
 	sameTickerCounter := 0
 	for {
 		ticker, err := rd.downloader.getTicker(nil)