diff --git a/config/config.go b/config/config.go
index 6873de7d5..17f7a33ea 100644
--- a/config/config.go
+++ b/config/config.go
@@ -16,11 +16,11 @@ const (
 	userAgentFormat = "/NEO-GO:%s/"
 
 	// ModeMainNet contains magic code used in the NEO main official network.
-	ModeMainNet     NetMode = 0x00746e41 // 7630401
+	ModeMainNet NetMode = 0x00746e41 // 7630401
 	// ModeTestNet contains magic code used in the NEO testing network.
-	ModeTestNet     NetMode = 0x74746e41 // 1953787457
+	ModeTestNet NetMode = 0x74746e41 // 1953787457
 	// ModePrivNet contains magic code usually used for NEO private networks.
-	ModePrivNet     NetMode = 56753      // docker privnet
+	ModePrivNet NetMode = 56753 // docker privnet
 	// ModeUnitTestNet is a stub magic code used for testing purposes.
 	ModeUnitTestNet NetMode = 0
 )
diff --git a/pkg/core/block_test.go b/pkg/core/block_test.go
index 4ba5e561e..b7b2bde09 100644
--- a/pkg/core/block_test.go
+++ b/pkg/core/block_test.go
@@ -250,7 +250,6 @@ func TestBlockSizeCalculation(t *testing.T) {
 	assert.Equal(t, "552102486fd15702c4490a26703112a5cc1d0923fd697a33406bd5a1c00e0013b09a7021024c7b7fb6c310fccf1ba33b082519d82964ea93868d676662d4a59ad548df0e7d2102aaec38470f6aad0042c6e877cfd8087d2676b0f516fddd362801b9bd3936399e2103b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c2103b8d9d5771d8f513aa0869b9cc8d50986403b78c6da36890638c3d46a5adce04a2102ca0e27697b9c248f6f16e085fd0061e26f44da85b58ee835c110caa5ec3ba5542102df48f60e8f3e01c48ff40b9b7f1310d7a8b2a193188befe1c2e3df740e89509357ae", hex.EncodeToString(b.Script.VerificationScript))
 	assert.Equal(t, "0006d3ff96e269f599eb1b5c5a527c218439e498dcc65b63794591bbcdc0516b", b.Hash().ReverseString())
 
-
 	buf := new(bytes.Buffer)
 
 	err = b.EncodeBinary(buf)
diff --git a/pkg/core/transaction/attribute.go b/pkg/core/transaction/attribute.go
index 3619fe931..1b3ca0c3b 100644
--- a/pkg/core/transaction/attribute.go
+++ b/pkg/core/transaction/attribute.go
@@ -67,7 +67,7 @@ func (attr *Attribute) EncodeBinary(w io.Writer) error {
 		var urllen = uint8(len(attr.Data))
 		bw.WriteLE(urllen)
 		fallthrough
-	case Script, ContractHash, Vote, Hash1,	Hash2, Hash3, Hash4, Hash5, Hash6,
+	case Script, ContractHash, Vote, Hash1, Hash2, Hash3, Hash4, Hash5, Hash6,
 		Hash7, Hash8, Hash9, Hash10, Hash11, Hash12, Hash13, Hash14, Hash15:
 		bw.WriteLE(attr.Data)
 	default:
diff --git a/pkg/core/transaction/invocation.go b/pkg/core/transaction/invocation.go
index d23a8f59d..0b255426c 100644
--- a/pkg/core/transaction/invocation.go
+++ b/pkg/core/transaction/invocation.go
@@ -13,7 +13,7 @@ type InvocationTX struct {
 	Script []byte
 
 	// Gas cost of the smart contract.
-	Gas util.Fixed8
+	Gas     util.Fixed8
 	Version uint8
 }
 
@@ -36,7 +36,7 @@ func NewInvocationTX(script []byte) *Transaction {
 func (tx *InvocationTX) DecodeBinary(r io.Reader) error {
 	br := util.BinReader{R: r}
 	tx.Script = br.ReadBytes()
-	if (tx.Version >= 1) {
+	if tx.Version >= 1 {
 		br.ReadLE(&tx.Gas)
 	} else {
 		tx.Gas = util.Fixed8FromInt64(0)
@@ -48,7 +48,7 @@ func (tx *InvocationTX) DecodeBinary(r io.Reader) error {
 func (tx *InvocationTX) EncodeBinary(w io.Writer) error {
 	bw := util.BinWriter{W: w}
 	bw.WriteBytes(tx.Script)
-	if (tx.Version >= 1) {
+	if tx.Version >= 1 {
 		bw.WriteLE(tx.Gas)
 	}
 	return bw.Err
@@ -57,7 +57,7 @@ func (tx *InvocationTX) EncodeBinary(w io.Writer) error {
 // Size returns serialized binary size for this transaction.
 func (tx *InvocationTX) Size() int {
 	sz := util.GetVarSize(tx.Script)
-	if (tx.Version >= 1) {
+	if tx.Version >= 1 {
 		sz += tx.Gas.Size()
 	}
 	return sz
diff --git a/pkg/crypto/keys/nep2.go b/pkg/crypto/keys/nep2.go
index c67888792..29f1c5661 100644
--- a/pkg/crypto/keys/nep2.go
+++ b/pkg/crypto/keys/nep2.go
@@ -40,7 +40,6 @@ func NEP2ScryptParams() ScryptParams {
 	}
 }
 
-
 // NEP2Encrypt encrypts a the PrivateKey using a given passphrase
 // under the NEP-2 standard.
 func NEP2Encrypt(priv *PrivateKey, passphrase string) (s string, err error) {
diff --git a/pkg/crypto/keys/private_key_test.go b/pkg/crypto/keys/private_key_test.go
index ea021b6ea..fd71d6812 100644
--- a/pkg/crypto/keys/private_key_test.go
+++ b/pkg/crypto/keys/private_key_test.go
@@ -5,11 +5,10 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/stretchr/testify/assert"
 	"github.com/CityOfZion/neo-go/pkg/internal/keytestcases"
+	"github.com/stretchr/testify/assert"
 )
 
-
 func TestPrivateKey(t *testing.T) {
 	for _, testCase := range keytestcases.Arr {
 		privKey, err := NewPrivateKeyFromHex(testCase.PrivateKey)
diff --git a/pkg/crypto/keys/publickey.go b/pkg/crypto/keys/publickey.go
index ba823839c..269c715cf 100644
--- a/pkg/crypto/keys/publickey.go
+++ b/pkg/crypto/keys/publickey.go
@@ -11,8 +11,8 @@ import (
 	"io"
 	"math/big"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
 	"github.com/CityOfZion/neo-go/pkg/crypto"
+	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
 	"github.com/pkg/errors"
 )
 
@@ -150,7 +150,7 @@ func (p *PublicKey) DecodeBinary(r io.Reader) error {
 			return err
 		}
 		x = new(big.Int).SetBytes(xbytes)
-		ylsb := uint(prefix&0x1)
+		ylsb := uint(prefix & 0x1)
 		y, err = decodeCompressedY(x, ylsb)
 		if err != nil {
 			return err
diff --git a/pkg/crypto/keys/wif.go b/pkg/crypto/keys/wif.go
index df856412f..d0b6b7519 100644
--- a/pkg/crypto/keys/wif.go
+++ b/pkg/crypto/keys/wif.go
@@ -99,7 +99,7 @@ func (wif WIF) GetVerificationScript() []byte {
 	)
 	var (
 		vScript []byte
-		pubkey *PublicKey
+		pubkey  *PublicKey
 	)
 	pubkey = wif.PrivateKey.PublicKey()
 	vScript = append([]byte{pushbytes33}, pubkey.Bytes()...)
diff --git a/pkg/network/server.go b/pkg/network/server.go
index d6e260956..21b305616 100644
--- a/pkg/network/server.go
+++ b/pkg/network/server.go
@@ -352,5 +352,5 @@ func (s *Server) RelayDirectly(p Peer, inv *payload.Inventory) {
 }
 
 func init() {
-        rand.Seed(time.Now().UTC().UnixNano())
+	rand.Seed(time.Now().UTC().UnixNano())
 }
diff --git a/pkg/rpc/txTypes.go b/pkg/rpc/txTypes.go
index 96ad082d5..29065d41a 100644
--- a/pkg/rpc/txTypes.go
+++ b/pkg/rpc/txTypes.go
@@ -7,8 +7,8 @@ package rpc
 
 import (
 	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/CityOfZion/neo-go/pkg/util"
 )
 
 type (
diff --git a/pkg/rpc/wrappers/account_state.go b/pkg/rpc/wrappers/account_state.go
index dda35ac70..6fa50d85c 100644
--- a/pkg/rpc/wrappers/account_state.go
+++ b/pkg/rpc/wrappers/account_state.go
@@ -12,11 +12,11 @@ import (
 // AccountState wrapper used for the representation of
 // core.AccountState on the RPC Server.
 type AccountState struct {
-	Version    uint8               `json:"version"`
-	ScriptHash util.Uint160        `json:"script_hash"`
-	IsFrozen   bool                `json:"frozen"`
+	Version    uint8             `json:"version"`
+	ScriptHash util.Uint160      `json:"script_hash"`
+	IsFrozen   bool              `json:"frozen"`
 	Votes      []*keys.PublicKey `json:"votes"`
-	Balances   []Balance           `json:"balances"`
+	Balances   []Balance         `json:"balances"`
 }
 
 // Balances type for sorting balances in rpc response
diff --git a/pkg/util/size_test.go b/pkg/util/size_test.go
index 15eb77523..9d1217424 100644
--- a/pkg/util/size_test.go
+++ b/pkg/util/size_test.go
@@ -170,9 +170,9 @@ func TestVarSize(t *testing.T) {
 			"test_string_3",
 			41,
 		},
-		{[]*smthSerializable{&smthSerializable{}, &smthSerializable{}},
+		{[]*smthSerializable{{}, {}},
 			"test_Serializable",
-			2 * 42 + 1,
+			2*42 + 1,
 		},
 	}
 
diff --git a/pkg/vm/compiler/codegen.go b/pkg/vm/compiler/codegen.go
index d0ae6290b..f90138616 100644
--- a/pkg/vm/compiler/codegen.go
+++ b/pkg/vm/compiler/codegen.go
@@ -361,7 +361,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
 
 		case token.LOR:
 			ast.Walk(c, n.X)
-			emitJmp(c.prog, vm.JMPIF, int16(len(c.l) - 3))
+			emitJmp(c.prog, vm.JMPIF, int16(len(c.l)-3))
 			ast.Walk(c, n.Y)
 			return nil
 
diff --git a/pkg/vm/tests/vm_test.go b/pkg/vm/tests/vm_test.go
index 4ce507dc1..5ace8c269 100644
--- a/pkg/vm/tests/vm_test.go
+++ b/pkg/vm/tests/vm_test.go
@@ -18,7 +18,7 @@ type testCase struct {
 
 func run_testcases(t *testing.T, tcases []testCase) {
 	for _, tcase := range tcases {
-		t.Run(tcase.name, func(t *testing.T) {eval(t, tcase.src, tcase.result)})
+		t.Run(tcase.name, func(t *testing.T) { eval(t, tcase.src, tcase.result) })
 	}
 }
 
diff --git a/pkg/vm/vm.go b/pkg/vm/vm.go
index 216f6ca6c..e43216762 100644
--- a/pkg/vm/vm.go
+++ b/pkg/vm/vm.go
@@ -7,8 +7,8 @@ import (
 	"log"
 	"math/big"
 	"os"
-	"text/tabwriter"
 	"reflect"
+	"text/tabwriter"
 
 	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
 	"github.com/CityOfZion/neo-go/pkg/util"
@@ -308,7 +308,7 @@ func (v *VM) execute(ctx *Context, op Instruction) {
 		l := int(v.estack.Pop().BigInt().Int64())
 		o := int(v.estack.Pop().BigInt().Int64())
 		s := v.estack.Pop().Bytes()
-		v.estack.PushVal(s[o:o+l])
+		v.estack.PushVal(s[o : o+l])
 	case LEFT:
 		l := int(v.estack.Pop().BigInt().Int64())
 		s := v.estack.Pop().Bytes()
@@ -416,7 +416,7 @@ func (v *VM) execute(ctx *Context, op Instruction) {
 	case EQUAL:
 		b := v.estack.Pop()
 		a := v.estack.Pop()
-		v.estack.PushVal(reflect.DeepEqual(a,b))
+		v.estack.PushVal(reflect.DeepEqual(a, b))
 
 	// Bit operations.
 	case INVERT:
diff --git a/pkg/vm/vm_test.go b/pkg/vm/vm_test.go
index 5324581e4..5bc01f8ff 100644
--- a/pkg/vm/vm_test.go
+++ b/pkg/vm/vm_test.go
@@ -773,9 +773,9 @@ func TestUNPACKGood(t *testing.T) {
 	assert.Equal(t, 5, vm.estack.Len())
 	assert.Equal(t, int64(len(elements)), vm.estack.Peek(0).BigInt().Int64())
 	for k, v := range elements {
-		assert.Equal(t, int64(v), vm.estack.Peek(k + 1).BigInt().Int64())
+		assert.Equal(t, int64(v), vm.estack.Peek(k+1).BigInt().Int64())
 	}
-	assert.Equal(t, int64(1), vm.estack.Peek(len(elements) + 1).BigInt().Int64())
+	assert.Equal(t, int64(1), vm.estack.Peek(len(elements)+1).BigInt().Int64())
 }
 
 func TestREVERSEBadNotArray(t *testing.T) {
@@ -817,7 +817,7 @@ func TestREVERSEGood(t *testing.T) {
 		a := vm.estack.Peek(0).Array()
 		assert.Equal(t, len(elements), len(a))
 		for k, v := range elements {
-			e := a[len(a) - 1 - k].Value().(*big.Int)
+			e := a[len(a)-1-k].Value().(*big.Int)
 			assert.Equal(t, int64(v), e.Int64())
 		}
 		assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
diff --git a/pkg/wallet/account.go b/pkg/wallet/account.go
index 6f4677d37..36362e431 100644
--- a/pkg/wallet/account.go
+++ b/pkg/wallet/account.go
@@ -1,8 +1,8 @@
 package wallet
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/CityOfZion/neo-go/pkg/util"
 )
 
 // Account represents a NEO account. It holds the private and public key