diff --git a/whisper/whisperv6/api.go b/whisper/whisperv6/api.go
index 492aba724b..e399ff0e19 100644
--- a/whisper/whisperv6/api.go
+++ b/whisper/whisperv6/api.go
@@ -36,6 +36,7 @@ const (
 	filterTimeout = 300 // filters are considered timeout out after filterTimeout seconds
 )
 
+// List of errors
 var (
 	ErrSymAsym              = errors.New("specify either a symmetric or an asymmetric key")
 	ErrInvalidSymmetricKey  = errors.New("invalid symmetric key")
diff --git a/whisper/whisperv6/doc.go b/whisper/whisperv6/doc.go
index 152c312e3a..699fd5c767 100644
--- a/whisper/whisperv6/doc.go
+++ b/whisper/whisperv6/doc.go
@@ -37,6 +37,7 @@ import (
 	"time"
 )
 
+// Whisper protocol parameters
 const (
 	ProtocolVersion    = uint64(6) // Protocol version number
 	ProtocolVersionStr = "6.0"     // The same, as a string
diff --git a/whisper/whisperv6/filter.go b/whisper/whisperv6/filter.go
index b5b6fca348..411f09b27e 100644
--- a/whisper/whisperv6/filter.go
+++ b/whisper/whisperv6/filter.go
@@ -166,7 +166,8 @@ func (f *Filter) expectsSymmetricEncryption() bool {
 	return f.KeySym != nil
 }
 
-// Trigger
+// Trigger adds a yet-unknown message to the filter's list of
+// received messages.
 func (f *Filter) Trigger(msg *ReceivedMessage) {
 	f.mutex.Lock()
 	defer f.mutex.Unlock()