diff --git a/proto/fungible/tx.proto b/proto/fungible/tx.proto
index ed04693a5b..42a25b7e8b 100644
--- a/proto/fungible/tx.proto
+++ b/proto/fungible/tx.proto
@@ -16,8 +16,8 @@ service Msg {
 
 message MsgUpdateZRC20WithdrawFee {
   string creator = 1;
-  string zrc20 = 2; // zrc20 address
-  string newWithdrawFee = 6 [
+  string zrc20_address = 2; // zrc20 address
+  string new_withdraw_fee = 6 [
     (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Uint",
     (gogoproto.nullable) = false
   ];
@@ -27,7 +27,7 @@ message MsgUpdateZRC20WithdrawFeeResponse {}
 
 message MsgUpdateSystemContract {
   string creator = 1;
-  string newSystemContractAddress = 2;
+  string new_system_contract_address = 2;
 }
 
 message MsgUpdateSystemContractResponse {}
diff --git a/x/fungible/keeper/msg_server_update_zrc20_withdraw_fee.go b/x/fungible/keeper/msg_server_update_zrc20_withdraw_fee.go
index f8db7481c6..0d85cb917a 100644
--- a/x/fungible/keeper/msg_server_update_zrc20_withdraw_fee.go
+++ b/x/fungible/keeper/msg_server_update_zrc20_withdraw_fee.go
@@ -17,9 +17,9 @@ func (k Keeper) UpdateZRC20WithdrawFee(goCtx context.Context, msg *types.MsgUpda
 	if msg.Creator != k.zetaobserverKeeper.GetParams(ctx).GetAdminPolicyAccount(zetaObserverTypes.Policy_Type_deploy_fungible_coin) {
 		return nil, sdkerrors.Wrap(sdkerrors.ErrUnauthorized, "Deploy can only be executed by the correct policy account")
 	}
-	zrc20Addr := ethcommon.HexToAddress(msg.Zrc20)
+	zrc20Addr := ethcommon.HexToAddress(msg.Zrc20Address)
 	if zrc20Addr == (ethcommon.Address{}) {
-		return nil, sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid zrc20 contract address (%s)", msg.Zrc20)
+		return nil, sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid zrc20 contract address (%s)", msg.Zrc20Address)
 	}
 
 	// update contracts
@@ -45,7 +45,7 @@ func (k Keeper) UpdateZRC20WithdrawFee(goCtx context.Context, msg *types.MsgUpda
 	}
 
 	if !found {
-		return nil, sdkerrors.Wrapf(types.ErrInvalidAddress, "no foreign coin match requested zrc20 address (%s)", msg.Zrc20)
+		return nil, sdkerrors.Wrapf(types.ErrInvalidAddress, "no foreign coin match requested zrc20 address (%s)", msg.Zrc20Address)
 	}
 
 	res, err := k.CallEVM(ctx, *zrc20ABI, types.ModuleAddressEVM, zrc20Addr, BigIntZero, nil, false, "PROTOCOL_FLAT_FEE")
diff --git a/x/fungible/types/message_update_zrc20_withdraw_fee.go b/x/fungible/types/message_update_zrc20_withdraw_fee.go
index ed9dcad9a9..f661003a18 100644
--- a/x/fungible/types/message_update_zrc20_withdraw_fee.go
+++ b/x/fungible/types/message_update_zrc20_withdraw_fee.go
@@ -13,7 +13,7 @@ var _ sdk.Msg = &MsgUpdateZRC20WithdrawFee{}
 func NewMsgUpdateZRC20WithdrawFee(creator string, zrc20 string, newFee sdk.Uint) *MsgUpdateZRC20WithdrawFee {
 	return &MsgUpdateZRC20WithdrawFee{
 		Creator:        creator,
-		Zrc20:          zrc20,
+		Zrc20Address:   zrc20,
 		NewWithdrawFee: newFee,
 	}
 }
@@ -45,8 +45,8 @@ func (msg *MsgUpdateZRC20WithdrawFee) ValidateBasic() error {
 		return sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid creator address (%s)", err)
 	}
 	// check if the system contract address is valid
-	if ethcommon.HexToAddress(msg.Zrc20) == (ethcommon.Address{}) {
-		return sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid system contract address (%s)", msg.Zrc20)
+	if ethcommon.HexToAddress(msg.Zrc20Address) == (ethcommon.Address{}) {
+		return sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid system contract address (%s)", msg.Zrc20Address)
 	}
 
 	return nil
diff --git a/x/fungible/types/tx.pb.go b/x/fungible/types/tx.pb.go
index b74f629f3c..e439aa1548 100644
--- a/x/fungible/types/tx.pb.go
+++ b/x/fungible/types/tx.pb.go
@@ -33,8 +33,8 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
 type MsgUpdateZRC20WithdrawFee struct {
 	Creator        string                                  `protobuf:"bytes,1,opt,name=creator,proto3" json:"creator,omitempty"`
-	Zrc20          string                                  `protobuf:"bytes,2,opt,name=zrc20,proto3" json:"zrc20,omitempty"`
-	NewWithdrawFee github_com_cosmos_cosmos_sdk_types.Uint `protobuf:"bytes,6,opt,name=newWithdrawFee,proto3,customtype=github.com/cosmos/cosmos-sdk/types.Uint" json:"newWithdrawFee"`
+	Zrc20Address   string                                  `protobuf:"bytes,2,opt,name=zrc20_address,json=zrc20Address,proto3" json:"zrc20_address,omitempty"`
+	NewWithdrawFee github_com_cosmos_cosmos_sdk_types.Uint `protobuf:"bytes,6,opt,name=new_withdraw_fee,json=newWithdrawFee,proto3,customtype=github.com/cosmos/cosmos-sdk/types.Uint" json:"new_withdraw_fee"`
 }
 
 func (m *MsgUpdateZRC20WithdrawFee) Reset()         { *m = MsgUpdateZRC20WithdrawFee{} }
@@ -77,9 +77,9 @@ func (m *MsgUpdateZRC20WithdrawFee) GetCreator() string {
 	return ""
 }
 
-func (m *MsgUpdateZRC20WithdrawFee) GetZrc20() string {
+func (m *MsgUpdateZRC20WithdrawFee) GetZrc20Address() string {
 	if m != nil {
-		return m.Zrc20
+		return m.Zrc20Address
 	}
 	return ""
 }
@@ -122,7 +122,7 @@ var xxx_messageInfo_MsgUpdateZRC20WithdrawFeeResponse proto.InternalMessageInfo
 
 type MsgUpdateSystemContract struct {
 	Creator                  string `protobuf:"bytes,1,opt,name=creator,proto3" json:"creator,omitempty"`
-	NewSystemContractAddress string `protobuf:"bytes,2,opt,name=newSystemContractAddress,proto3" json:"newSystemContractAddress,omitempty"`
+	NewSystemContractAddress string `protobuf:"bytes,2,opt,name=new_system_contract_address,json=newSystemContractAddress,proto3" json:"new_system_contract_address,omitempty"`
 }
 
 func (m *MsgUpdateSystemContract) Reset()         { *m = MsgUpdateSystemContract{} }
@@ -446,44 +446,46 @@ func init() {
 func init() { proto.RegisterFile("fungible/tx.proto", fileDescriptor_197fdedece277fa0) }
 
 var fileDescriptor_197fdedece277fa0 = []byte{
-	// 590 bytes of a gzipped FileDescriptorProto
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-	0x7f, 0x03, 0x00, 0x00, 0xff, 0xff, 0x5d, 0xef, 0x40, 0xb1, 0xe1, 0x05, 0x00, 0x00,
+	// 613 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x54, 0xcd, 0x4f, 0x13, 0x51,
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+	0x74, 0xee, 0x1a, 0x63, 0xf1, 0x61, 0x7e, 0xf0, 0x27, 0x00, 0x00, 0xff, 0xff, 0x31, 0x41, 0xaf,
+	0x74, 0xf5, 0x05, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -704,10 +706,10 @@ func (m *MsgUpdateZRC20WithdrawFee) MarshalToSizedBuffer(dAtA []byte) (int, erro
 	}
 	i--
 	dAtA[i] = 0x32
-	if len(m.Zrc20) > 0 {
-		i -= len(m.Zrc20)
-		copy(dAtA[i:], m.Zrc20)
-		i = encodeVarintTx(dAtA, i, uint64(len(m.Zrc20)))
+	if len(m.Zrc20Address) > 0 {
+		i -= len(m.Zrc20Address)
+		copy(dAtA[i:], m.Zrc20Address)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Zrc20Address)))
 		i--
 		dAtA[i] = 0x12
 	}
@@ -981,7 +983,7 @@ func (m *MsgUpdateZRC20WithdrawFee) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
 	}
-	l = len(m.Zrc20)
+	l = len(m.Zrc20Address)
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
 	}
@@ -1167,7 +1169,7 @@ func (m *MsgUpdateZRC20WithdrawFee) Unmarshal(dAtA []byte) error {
 			iNdEx = postIndex
 		case 2:
 			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field Zrc20", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field Zrc20Address", wireType)
 			}
 			var stringLen uint64
 			for shift := uint(0); ; shift += 7 {
@@ -1195,7 +1197,7 @@ func (m *MsgUpdateZRC20WithdrawFee) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			m.Zrc20 = string(dAtA[iNdEx:postIndex])
+			m.Zrc20Address = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 6:
 			if wireType != 2 {