diff --git a/blockchain/reactor.go b/blockchain/reactor.go
index d480eaca..f975737c 100644
--- a/blockchain/reactor.go
+++ b/blockchain/reactor.go
@@ -356,11 +356,11 @@ type BlockchainMessage interface{}
 
 func RegisterBlockchainMessages(cdc *amino.Codec) {
 	cdc.RegisterInterface((*BlockchainMessage)(nil), nil)
-	cdc.RegisterConcrete(&bcBlockRequestMessage{}, "tendermint/mempool/BlockRequest", nil)
-	cdc.RegisterConcrete(&bcBlockResponseMessage{}, "tendermint/mempool/BlockResponse", nil)
-	cdc.RegisterConcrete(&bcNoBlockResponseMessage{}, "tendermint/mempool/NoBlockResponse", nil)
-	cdc.RegisterConcrete(&bcStatusResponseMessage{}, "tendermint/mempool/StatusResponse", nil)
-	cdc.RegisterConcrete(&bcStatusRequestMessage{}, "tendermint/mempool/StatusRequest", nil)
+	cdc.RegisterConcrete(&bcBlockRequestMessage{}, "tendermint/blockchain/BlockRequest", nil)
+	cdc.RegisterConcrete(&bcBlockResponseMessage{}, "tendermint/blockchain/BlockResponse", nil)
+	cdc.RegisterConcrete(&bcNoBlockResponseMessage{}, "tendermint/blockchain/NoBlockResponse", nil)
+	cdc.RegisterConcrete(&bcStatusResponseMessage{}, "tendermint/blockchain/StatusResponse", nil)
+	cdc.RegisterConcrete(&bcStatusRequestMessage{}, "tendermint/blockchain/StatusRequest", nil)
 }
 
 func decodeMsg(bz []byte) (msg BlockchainMessage, err error) {