diff --git a/whisper/main.go b/whisper/main.go
index 422f0fa3bc..3c8c3801f7 100644
--- a/whisper/main.go
+++ b/whisper/main.go
@@ -69,10 +69,10 @@ func selfSend(shh *whisper.Whisper, payload []byte) error {
 	})
 	// Wrap the payload and encrypt it
 	msg := whisper.NewMessage(payload)
-	envelope, err := msg.Wrap(whisper.DefaultProofOfWork, whisper.Options{
+	envelope, err := msg.Wrap(whisper.DefaultPoW, whisper.Options{
 		From: id,
 		To:   &id.PublicKey,
-		TTL:  whisper.DefaultTimeToLive,
+		TTL:  whisper.DefaultTTL,
 	})
 	if err != nil {
 		return fmt.Errorf("failed to seal message: %v", err)
diff --git a/whisper/message.go b/whisper/message.go
index a4de18f650..0513627b49 100644
--- a/whisper/message.go
+++ b/whisper/message.go
@@ -62,7 +62,7 @@ func NewMessage(payload []byte) *Message {
 func (self *Message) Wrap(pow time.Duration, options Options) (*Envelope, error) {
 	// Use the default TTL if non was specified
 	if options.TTL == 0 {
-		options.TTL = DefaultTimeToLive
+		options.TTL = DefaultTTL
 	}
 	// Sign and encrypt the message if requested
 	if options.From != nil {
diff --git a/whisper/message_test.go b/whisper/message_test.go
index 319bc6025b..18a254e5c9 100644
--- a/whisper/message_test.go
+++ b/whisper/message_test.go
@@ -13,7 +13,7 @@ func TestMessageSimpleWrap(t *testing.T) {
 	payload := []byte("hello world")
 
 	msg := NewMessage(payload)
-	if _, err := msg.Wrap(DefaultProofOfWork, Options{}); err != nil {
+	if _, err := msg.Wrap(DefaultPoW, Options{}); err != nil {
 		t.Fatalf("failed to wrap message: %v", err)
 	}
 	if msg.Flags&signatureFlag != 0 {
@@ -36,7 +36,7 @@ func TestMessageCleartextSignRecover(t *testing.T) {
 	payload := []byte("hello world")
 
 	msg := NewMessage(payload)
-	if _, err := msg.Wrap(DefaultProofOfWork, Options{
+	if _, err := msg.Wrap(DefaultPoW, Options{
 		From: key,
 	}); err != nil {
 		t.Fatalf("failed to sign message: %v", err)
@@ -69,7 +69,7 @@ func TestMessageAnonymousEncryptDecrypt(t *testing.T) {
 	payload := []byte("hello world")
 
 	msg := NewMessage(payload)
-	envelope, err := msg.Wrap(DefaultProofOfWork, Options{
+	envelope, err := msg.Wrap(DefaultPoW, Options{
 		To: &key.PublicKey,
 	})
 	if err != nil {
@@ -104,7 +104,7 @@ func TestMessageFullCrypto(t *testing.T) {
 
 	payload := []byte("hello world")
 	msg := NewMessage(payload)
-	envelope, err := msg.Wrap(DefaultProofOfWork, Options{
+	envelope, err := msg.Wrap(DefaultPoW, Options{
 		From: fromKey,
 		To:   &toKey.PublicKey,
 	})
diff --git a/whisper/whisper.go b/whisper/whisper.go
index 2634a23a4a..b83e3f1c62 100644
--- a/whisper/whisper.go
+++ b/whisper/whisper.go
@@ -30,8 +30,8 @@ const (
 )
 
 const (
-	DefaultTimeToLive  = 50 * time.Second
-	DefaultProofOfWork = 50 * time.Millisecond
+	DefaultTTL = 50 * time.Second
+	DefaultPoW = 50 * time.Millisecond
 )
 
 type MessageEvent struct {
diff --git a/whisper/whisper_test.go b/whisper/whisper_test.go
index 3f903a9dc5..97644fd27d 100644
--- a/whisper/whisper_test.go
+++ b/whisper/whisper_test.go
@@ -83,10 +83,10 @@ func TestSelfMessage(t *testing.T) {
 	})
 	// Send a dummy message to oneself
 	msg := NewMessage([]byte("self whisper"))
-	envelope, err := msg.Wrap(DefaultProofOfWork, Options{
+	envelope, err := msg.Wrap(DefaultPoW, Options{
 		From: self,
 		To:   &self.PublicKey,
-		TTL:  DefaultTimeToLive,
+		TTL:  DefaultTTL,
 	})
 	if err != nil {
 		t.Fatalf("failed to wrap message: %v", err)
@@ -126,10 +126,10 @@ func TestDirectMessage(t *testing.T) {
 	})
 	// Send a dummy message from the sender
 	msg := NewMessage([]byte("direct whisper"))
-	envelope, err := msg.Wrap(DefaultProofOfWork, Options{
+	envelope, err := msg.Wrap(DefaultPoW, Options{
 		From: senderId,
 		To:   &recipientId.PublicKey,
-		TTL:  DefaultTimeToLive,
+		TTL:  DefaultTTL,
 	})
 	if err != nil {
 		t.Fatalf("failed to wrap message: %v", err)
@@ -184,9 +184,9 @@ func testBroadcast(anonymous bool, t *testing.T) {
 	}
 	// Send a dummy message from the sender
 	msg := NewMessage([]byte("broadcast whisper"))
-	envelope, err := msg.Wrap(DefaultProofOfWork, Options{
+	envelope, err := msg.Wrap(DefaultPoW, Options{
 		Topics: NewTopicsFromStrings("broadcast topic"),
-		TTL:    DefaultTimeToLive,
+		TTL:    DefaultTTL,
 	})
 	if err != nil {
 		t.Fatalf("failed to wrap message: %v", err)