diff --git a/core/types/transaction.go b/core/types/transaction.go
index 2f23a7960..6646bdf29 100644
--- a/core/types/transaction.go
+++ b/core/types/transaction.go
@@ -9,6 +9,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/secp256k1"
+	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/logger/glog"
 	"github.com/ethereum/go-ethereum/rlp"
 )
@@ -132,7 +133,7 @@ func (tx *Transaction) PublicKey() []byte {
 	//pubkey, _ := secp256k1.RecoverPubkey(hash[:], sig)
 	p, err := crypto.SigToPub(hash[:], sig)
 	if err != nil {
-		glog.V(0).Infof("Could not get pubkey from signature: ", err)
+		glog.V(logger.Error).Infof("Could not get pubkey from signature: ", err)
 		return nil
 	}
 	pubkey := crypto.FromECDSAPub(p)
diff --git a/core/vm/address.go b/core/vm/address.go
index c6db1d5ff..742017dd2 100644
--- a/core/vm/address.go
+++ b/core/vm/address.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/logger/glog"
 	"github.com/ethereum/go-ethereum/params"
 )
@@ -84,7 +85,7 @@ func ecrecoverFunc(in []byte) []byte {
 	pubKey, err := crypto.Ecrecover(in[:32], rsv)
 	// make sure the public key is a valid one
 	if err != nil {
-		glog.V(0).Infof("EC RECOVER FAIL: ", err)
+		glog.V(logger.Error).Infof("EC RECOVER FAIL: ", err)
 		return nil
 	}
 
diff --git a/whisper/message.go b/whisper/message.go
index 407cfb1e8..ad6a1bcff 100644
--- a/whisper/message.go
+++ b/whisper/message.go
@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/logger/glog"
 )
 
@@ -35,7 +36,7 @@ func (self *Message) Recover() *ecdsa.PublicKey {
 	defer func() { recover() }() // in case of invalid sig
 	pub, err := crypto.SigToPub(self.hash(), self.Signature)
 	if err != nil {
-		glog.V(0).Infof("Could not get pubkey from signature: ", err)
+		glog.V(logger.Error).Infof("Could not get pubkey from signature: ", err)
 		return nil
 	}
 	return pub