diff --git a/examples/basecoin/app/app.go b/examples/basecoin/app/app.go
index 6f820e465..0b5c382c6 100644
--- a/examples/basecoin/app/app.go
+++ b/examples/basecoin/app/app.go
@@ -108,6 +108,7 @@ func MakeCodec() *wire.Codec {
 	// cdc.RegisterInterface((*sdk.Msg)(nil), nil)
 	// bank.RegisterWire(cdc)   // Register bank.[SendMsg,IssueMsg] types.
 	// crypto.RegisterWire(cdc) // Register crypto.[PubKey,PrivKey,Signature] types.
+	// ibc.RegisterWire(cdc) // Register ibc.[IBCTransferMsg, IBCReceiveMsg] types.
 	return cdc
 }
 
diff --git a/x/bank/wire.go b/x/bank/wire.go
index e229e0450..846103a52 100644
--- a/x/bank/wire.go
+++ b/x/bank/wire.go
@@ -6,10 +6,7 @@ import (
 
 // Register concrete types on wire codec
 func RegisterWire(cdc *wire.Codec) {
-	// TODO: bring this back ...
-	/*
-		// TODO include option to always include prefix bytes.
-		cdc.RegisterConcrete(SendMsg{}, "cosmos-sdk/SendMsg", nil)
-		cdc.RegisterConcrete(IssueMsg{}, "cosmos-sdk/IssueMsg", nil)
-	*/
+	// TODO include option to always include prefix bytes.
+	//cdc.RegisterConcrete(SendMsg{}, "github.com/cosmos/cosmos-sdk/bank/SendMsg", nil)
+	//cdc.RegisterConcrete(IssueMsg{}, "github.com/cosmos/cosmos-sdk/bank/IssueMsg", nil)
 }
diff --git a/x/ibc/types.go b/x/ibc/types.go
index e590e337f..5af22220a 100644
--- a/x/ibc/types.go
+++ b/x/ibc/types.go
@@ -4,12 +4,6 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	wire "github.com/cosmos/cosmos-sdk/wire"
-
-	// temporal
-	"github.com/cosmos/cosmos-sdk/examples/basecoin/types"
-	"github.com/cosmos/cosmos-sdk/examples/basecoin/x/cool"
-	"github.com/cosmos/cosmos-sdk/x/bank"
-	oldwire "github.com/tendermint/go-wire"
 )
 
 // ------------------------------
@@ -61,7 +55,7 @@ func (msg IBCTransferMsg) Get(key interface{}) interface{} {
 }
 
 func (msg IBCTransferMsg) GetSignBytes() []byte {
-	cdc := makeCodec()
+	cdc := wire.NewCodec()
 	bz, err := cdc.MarshalBinary(msg.IBCPacket)
 	if err != nil {
 		panic(err)
@@ -98,7 +92,7 @@ func (msg IBCReceiveMsg) Get(key interface{}) interface{} {
 }
 
 func (msg IBCReceiveMsg) GetSignBytes() []byte {
-	cdc := newCodec()
+	cdc := wire.NewCodec()
 	bz, err := cdc.MarshalBinary(msg.IBCPacket)
 	if err != nil {
 		panic(err)
@@ -114,40 +108,3 @@ func (msg IBCReceiveMsg) ValidateBasic() sdk.Error {
 func (msg IBCReceiveMsg) GetSigners() []sdk.Address {
 	return []sdk.Address{msg.Relayer}
 }
-
-// -------------------------
-// Helpers
-
-func newCodec() *wire.Codec {
-	return wire.NewCodec()
-}
-
-func makeCodec() *wire.Codec { // basecoin/app.MakeCodec()
-	const (
-		msgTypeSend        = 0x1
-		msgTypeIssue       = 0x2
-		msgTypeQuiz        = 0x3
-		msgTypeSetTrend    = 0x4
-		msgTypeIBCTransfer = 0x5
-		msgTypeIBCReceive  = 0x6
-	)
-
-	var _ = oldwire.RegisterInterface(
-		struct{ sdk.Msg }{},
-		oldwire.ConcreteType{bank.SendMsg{}, msgTypeSend},
-		oldwire.ConcreteType{bank.IssueMsg{}, msgTypeIssue},
-		oldwire.ConcreteType{cool.QuizMsg{}, msgTypeQuiz},
-		oldwire.ConcreteType{cool.SetTrendMsg{}, msgTypeSetTrend},
-		oldwire.ConcreteType{IBCTransferMsg{}, msgTypeIBCTransfer},
-		oldwire.ConcreteType{IBCReceiveMsg{}, msgTypeIBCReceive},
-	)
-
-	const accTypeApp = 0x1
-	var _ = oldwire.RegisterInterface(
-		struct{ sdk.Account }{},
-		oldwire.ConcreteType{&types.AppAccount{}, accTypeApp},
-	)
-
-	cdc := wire.NewCodec()
-	return cdc
-}
diff --git a/x/ibc/wire.go b/x/ibc/wire.go
new file mode 100644
index 000000000..91e6d88bb
--- /dev/null
+++ b/x/ibc/wire.go
@@ -0,0 +1,11 @@
+package ibc
+
+import (
+	"github.com/cosmos/cosmos-sdk/wire"
+)
+
+// Register concrete types on wire codec
+func RegisterWire(cdc *wire.Codec) {
+	//cdc.RegisterConcrete(IBCTransferMsg{}, "github.com/cosmos/cosmos-sdk/x/ibc/IBCTransferMsg", nil)
+	//cdc.RegisterConcrete(IBCReceiveMsg{}, "github.com/cosmos/cosmos-sdk/x/ibc/IBCReceiveMsg", nil)
+}