diff --git a/blockchain/reactor.go b/blockchain/reactor.go
index 952241af1..33edb4179 100644
--- a/blockchain/reactor.go
+++ b/blockchain/reactor.go
@@ -145,7 +145,7 @@ func (bcR *BlockchainReactor) Receive(chId byte, src *p2p.Peer, msgBytes []byte)
 		// Got a peer status.
 		bcR.pool.SetPeerHeight(src.Key, msg.Height)
 	default:
-		log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+		log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 	}
 }
 
@@ -270,7 +270,7 @@ func DecodeMessage(bz []byte) (msgType byte, msg BlockchainMessage, err error) {
 	msgType = bz[0]
 	n := new(int64)
 	r := bytes.NewReader(bz)
-	msg = binary.ReadBinary(&msg, r, n, &err)
+	msg = binary.ReadBinary(struct{ BlockchainMessage }{}, r, n, &err).(struct{ BlockchainMessage }).BlockchainMessage
 	return
 }
 
@@ -300,6 +300,6 @@ type bcPeerStatusMessage struct {
 	Height uint
 }
 
-func (m bcPeerStatusMessage) String() string {
+func (m *bcPeerStatusMessage) String() string {
 	return fmt.Sprintf("[bcPeerStatusMessage %v]", m.Height)
 }
diff --git a/consensus/reactor.go b/consensus/reactor.go
index 08a648059..1e8766458 100644
--- a/consensus/reactor.go
+++ b/consensus/reactor.go
@@ -148,7 +148,7 @@ func (conR *ConsensusReactor) Receive(chId byte, peer *p2p.Peer, msgBytes []byte
 		case *HasVoteMessage:
 			ps.ApplyHasVoteMessage(msg)
 		default:
-			log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+			log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 		}
 
 	case DataChannel:
@@ -165,11 +165,11 @@ func (conR *ConsensusReactor) Receive(chId byte, peer *p2p.Peer, msgBytes []byte
 				ps.SetHasProposalPOLPart(msg.Height, msg.Round, msg.Part.Index)
 				_, err = conR.conS.AddProposalPOLPart(msg.Height, msg.Round, msg.Part)
 			} else {
-				log.Warn("Unknown part type %v", msg.Type)
+				log.Warn(Fmt("Unknown part type %v", msg.Type))
 			}
 
 		default:
-			log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+			log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 		}
 
 	case VoteChannel:
@@ -213,10 +213,10 @@ func (conR *ConsensusReactor) Receive(chId byte, peer *p2p.Peer, msgBytes []byte
 			}
 
 		default:
-			log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+			log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 		}
 	default:
-		log.Warn("Unknown channel %X", chId)
+		log.Warn(Fmt("Unknown channel %X", chId))
 	}
 
 	if err != nil {
@@ -755,7 +755,6 @@ func (ps *PeerState) ApplyHasVoteMessage(msg *HasVoteMessage) {
 // Messages
 
 const (
-	msgTypeUnknown      = byte(0x00)
 	msgTypeNewRoundStep = byte(0x01)
 	msgTypeCommitStep   = byte(0x02)
 	msgTypeProposal     = byte(0x11)
diff --git a/mempool/reactor.go b/mempool/reactor.go
index 6d10112b4..1b87a26f4 100644
--- a/mempool/reactor.go
+++ b/mempool/reactor.go
@@ -7,6 +7,7 @@ import (
 	"sync/atomic"
 
 	"github.com/tendermint/tendermint/binary"
+	. "github.com/tendermint/tendermint/common"
 	"github.com/tendermint/tendermint/events"
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/types"
@@ -100,7 +101,7 @@ func (memR *MempoolReactor) Receive(chId byte, src *p2p.Peer, msgBytes []byte) {
 		}
 
 	default:
-		log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+		log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 	}
 }
 
diff --git a/p2p/pex_reactor.go b/p2p/pex_reactor.go
index 5a9da8ef9..1ad1a7284 100644
--- a/p2p/pex_reactor.go
+++ b/p2p/pex_reactor.go
@@ -120,7 +120,7 @@ func (pexR *PEXReactor) Receive(chId byte, src *Peer, msgBytes []byte) {
 			pexR.book.AddAddress(addr, srcAddr)
 		}
 	default:
-		log.Warn("Unknown message type %v", reflect.TypeOf(msg))
+		log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg)))
 	}
 
 }