diff --git a/whisper/whisperv6/message.go b/whisper/whisperv6/message.go
index b69ab60693..7def35f14f 100644
--- a/whisper/whisperv6/message.go
+++ b/whisper/whisperv6/message.go
@@ -90,7 +90,7 @@ func (msg *ReceivedMessage) isAsymmetricEncryption() bool {
 
 // NewSentMessage creates and initializes a non-signed, non-encrypted Whisper message.
 func newSentMessage(params *MessageParams) (*sentMessage, error) {
-  const payloadSizeFieldMaxSize = 4
+	const payloadSizeFieldMaxSize = 4
 	msg := sentMessage{}
 	msg.Raw = make([]byte, 1,
 		flagsLength+payloadSizeFieldMaxSize+len(params.Payload)+len(params.Padding)+signatureLength+padSizeLimit)