diff --git a/docs/spec/ibc/mvp1.md b/docs/spec/ibc/mvp1.md
index 718c9e4a85..cadc745dd5 100644
--- a/docs/spec/ibc/mvp1.md
+++ b/docs/spec/ibc/mvp1.md
@@ -14,18 +14,18 @@ The initial implementation of IBC will include just enough for simple coin trans
 type IBCTransferPacket struct {
     DestAddr sdk.Address
     Coins    sdk.Coins
+    SrcChain string
+    DestChain string
 }
 
 // Implements sdk.Msg
 type IBCTransferMsg struct {
     IBCTransferPacket
-    DestChain string
 }
 
 // Implements sdk.Msg
 type IBCReceiveMsg struct {
     IBCTransferPacket
-    SrcChain string
 }
 
 // Internal API
diff --git a/docs/spec/ibc/mvp2.md b/docs/spec/ibc/mvp2.md
index 860bbdc2f9..deee209527 100644
--- a/docs/spec/ibc/mvp2.md
+++ b/docs/spec/ibc/mvp2.md
@@ -11,28 +11,23 @@ IBC module will store its own router for handling custom incoming msgs. `IBCPush
 ```golang
 // User facing API
 
-type IBCTransferData struct {
-    SrcAddr  sdk.Address
+type IBCTransferPacket struct {
     DestAddr sdk.Address
     Coins    sdk.Coins
-}
-
-// Implements ibc.PacketData
-type IBCTransferPacket struct {
-    IBCTransferData
-}
-
-// Implements ibc.PacketData
-type IBCReceivePacket struct {
-    IBCTransferData    
-}
-
-type Packet struct {
-    Data      PacketData
-    SrcChain  string    
+    SrcChain string
     DestChain string
 }
 
+// Implements sdk.Msg
+type IBCTransferMsg struct {
+    IBCTransferPacket
+}
+
+// Implements sdk.Msg
+type IBCReceiveMsg struct {
+    IBCTransferPacket
+}
+
 // Internal API
 
 func NewHandler(dispatcher Dispatcher, ibcm IBCMapper) sdk.Handler