diff --git a/cmd/ethtest/main.go b/cmd/ethtest/main.go
index f5b423e8d1..952ba1bd62 100644
--- a/cmd/ethtest/main.go
+++ b/cmd/ethtest/main.go
@@ -33,12 +33,12 @@ import (
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/logger"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/tests/helper"
-	"github.com/ethereum/go-ethereum/core/vm"
 )
 
 type Log struct {
@@ -80,8 +80,7 @@ func StateObjectFromAccount(db common.Database, addr string, account Account) *s
 }
 
 type VmTest struct {
-	Callcreates interface{}
-	//Env         map[string]string
+	Callcreates   interface{}
 	Env           Env
 	Exec          map[string]string
 	Transaction   map[string]string
@@ -219,7 +218,7 @@ func RunVmTest(r io.Reader) (failed int) {
 }
 
 func main() {
-	//helper.Logger.SetLogLevel(5)
+	helper.Logger.SetLogLevel(5)
 	vm.Debug = true
 
 	if len(os.Args) > 1 {
diff --git a/logger/logsystem.go b/logger/logsystem.go
index 995cf42404..4dadb126e6 100644
--- a/logger/logsystem.go
+++ b/logger/logsystem.go
@@ -14,17 +14,17 @@ type LogSystem interface {
 
 // NewStdLogSystem creates a LogSystem that prints to the given writer.
 // The flag values are defined package log.
-func NewStdLogSystem(writer io.Writer, flags int, level LogLevel) LogSystem {
+func NewStdLogSystem(writer io.Writer, flags int, level LogLevel) *StdLogSystem {
 	logger := log.New(writer, "", flags)
-	return &stdLogSystem{logger, uint32(level)}
+	return &StdLogSystem{logger, uint32(level)}
 }
 
-type stdLogSystem struct {
+type StdLogSystem struct {
 	logger *log.Logger
 	level  uint32
 }
 
-func (t *stdLogSystem) LogPrint(msg LogMsg) {
+func (t *StdLogSystem) LogPrint(msg LogMsg) {
 	stdmsg, ok := msg.(stdMsg)
 	if ok {
 		if t.GetLogLevel() >= stdmsg.Level() {
@@ -33,11 +33,11 @@ func (t *stdLogSystem) LogPrint(msg LogMsg) {
 	}
 }
 
-func (t *stdLogSystem) SetLogLevel(i LogLevel) {
+func (t *StdLogSystem) SetLogLevel(i LogLevel) {
 	atomic.StoreUint32(&t.level, uint32(i))
 }
 
-func (t *stdLogSystem) GetLogLevel() LogLevel {
+func (t *StdLogSystem) GetLogLevel() LogLevel {
 	return LogLevel(atomic.LoadUint32(&t.level))
 }
 
diff --git a/tests/helper/init.go b/tests/helper/init.go
index e0892d8f69..73d563e021 100644
--- a/tests/helper/init.go
+++ b/tests/helper/init.go
@@ -7,7 +7,7 @@ import (
 	logpkg "github.com/ethereum/go-ethereum/logger"
 )
 
-var Logger logpkg.LogSystem
+var Logger *logpkg.StdLogSystem
 var Log = logpkg.NewLogger("TEST")
 
 func init() {