diff --git a/x/intertx/client/tx.go b/x/intertx/client/tx.go
index 21a77f09c4..147343ce62 100644
--- a/x/intertx/client/tx.go
+++ b/x/intertx/client/tx.go
@@ -45,10 +45,13 @@ func GetTxCmd() *cobra.Command {
 
 func getRegisterAccountCmd() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:     "register --connection-id <connection-id> --version <version>",
-		Short:   "register an interchain account",
-		Long:    "register an interchain account for the chain corresponding to the connection-id.",
-		Example: "regen tx intertx register --connection-id channel-10 --version v5",
+		Use:   "register --connection-id <connection-id> --version <version>",
+		Short: "register an interchain account",
+		Long:  "register an interchain account for the chain corresponding to the connection-id.",
+		Example: `
+		regen tx intertx register --connection-id channel-10
+		regen tx intertx register --connection-id channel-10 --version '{"version":"ics27-1","tx_type":"sdk_multi_msg","encoding":"proto3","host_connection_id":"connection-0","controller_connection_id":"connection-0","address":"regen14zs2x38lmkw4eqvl3lpml5l8crzaxn6mpvh79z"}'
+		`,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := client.GetClientTxContext(cmd)
 			if err != nil {
diff --git a/x/intertx/types/v1/features/msg_register_account.feature b/x/intertx/types/v1/features/msg_register_account.feature
index d1a472559e..c6e46e4ffd 100644
--- a/x/intertx/types/v1/features/msg_register_account.feature
+++ b/x/intertx/types/v1/features/msg_register_account.feature
@@ -31,16 +31,6 @@ Feature: MsgRegisterAccount
     When the message is validated
     Then expect the error "owner: decoding bech32 failed: invalid bech32 string length 3"
 
-  Scenario: an error is returned if version is empty
-    Given the message
-    """
-    {
-      "owner": "regen16md38uw5z9v4du2dtq4qgake8ewyf36u6qgfza"
-    }
-    """
-    When the message is validated
-    Then expect the error "version cannot be empty: invalid request"
-
   Scenario: an error is returned if connection id is empty
     Given the message
     """
diff --git a/x/intertx/types/v1/init_test.go b/x/intertx/types/v1/init_test.go
new file mode 100644
index 0000000000..4b97be3f8f
--- /dev/null
+++ b/x/intertx/types/v1/init_test.go
@@ -0,0 +1,8 @@
+package v1
+
+import sdk "github.com/cosmos/cosmos-sdk/types"
+
+func init() {
+	cfg := sdk.GetConfig()
+	cfg.SetBech32PrefixForAccount("regen", "regenpub")
+}
diff --git a/x/intertx/types/v1/msg_register_account.go b/x/intertx/types/v1/msg_register_account.go
index 87ca3bdbe5..1b82e84c0b 100644
--- a/x/intertx/types/v1/msg_register_account.go
+++ b/x/intertx/types/v1/msg_register_account.go
@@ -20,10 +20,6 @@ func (m MsgRegisterAccount) ValidateBasic() error {
 		return sdkerrors.ErrInvalidAddress.Wrapf("owner: %s", err.Error())
 	}
 
-	if m.Version == "" {
-		return sdkerrors.ErrInvalidRequest.Wrap("version cannot be empty")
-	}
-
 	if m.ConnectionId == "" {
 		return sdkerrors.ErrInvalidRequest.Wrap("connection_id cannot be empty")
 	}
diff --git a/x/intertx/types/v1/msg_submit_tx.go b/x/intertx/types/v1/msg_submit_tx.go
index 0ee04382f2..754a18502a 100644
--- a/x/intertx/types/v1/msg_submit_tx.go
+++ b/x/intertx/types/v1/msg_submit_tx.go
@@ -1,6 +1,10 @@
 package v1
 
 import (
+	"fmt"
+
+	proto "github.com/gogo/protobuf/proto"
+
 	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@@ -9,6 +13,8 @@ import (
 
 var (
 	_ legacytx.LegacyMsg = &MsgSubmitTx{}
+
+	_ codectypes.UnpackInterfacesMessage = MsgSubmitTx{}
 )
 
 // ValidateBasic does a sanity check on the provided data.
@@ -52,7 +58,7 @@ func (m MsgSubmitTx) Type() string {
 // NewMsgSubmitTx creates a new MsgSubmitTx instance
 func NewMsgSubmitTx(owner string, connectionID string, msg sdk.Msg) *MsgSubmitTx {
 
-	anyMsg, err := codectypes.NewAnyWithValue(msg)
+	anyMsg, err := PackTxMsgAny(msg)
 	if err != nil {
 		panic(err)
 	}
@@ -63,3 +69,20 @@ func NewMsgSubmitTx(owner string, connectionID string, msg sdk.Msg) *MsgSubmitTx
 		Msg:          anyMsg,
 	}
 }
+
+// PackTxMsgAny marshals the sdk.Msg payload to a protobuf Any type
+func PackTxMsgAny(sdkMsg sdk.Msg) (*codectypes.Any, error) {
+	msg, ok := sdkMsg.(proto.Message)
+	if !ok {
+		return nil, fmt.Errorf("can't proto marshal %T", sdkMsg)
+	}
+
+	return codectypes.NewAnyWithValue(msg)
+}
+
+// UnpackInterfaces implements codectypes.UnpackInterfacesMessage
+func (msg MsgSubmitTx) UnpackInterfaces(unpacker codectypes.AnyUnpacker) error {
+	var sdkMsg sdk.Msg
+
+	return unpacker.UnpackAny(msg.Msg, &sdkMsg)
+}