diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index 23bf31b912..16541f2291 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -56,10 +56,10 @@ builds:
       - -X github.com/cosmos/cosmos-sdk/version.ClientName=zetaclientd
       - -X github.com/cosmos/cosmos-sdk/version.Version={{ .Version }}
       - -X github.com/cosmos/cosmos-sdk/version.Commit={{ .Env.COMMIT }}
-      - -X github.com/zeta-chain/zetacore/pkg.Name=zetacored
-      - -X github.com/zeta-chain/zetacore/pkg.Version={{ .Version }}
-      - -X github.com/zeta-chain/zetacore/pkg.CommitHash={{ .Env.COMMIT }}
-      - -X github.com/zeta-chain/zetacore/pkg.BuildTime=={{ .Env.BUILDTIME }}
+      - -X github.com/zeta-chain/zetacore/pkg/constant.Name=zetacored
+      - -X github.com/zeta-chain/zetacore/pkg/constant.Version={{ .Version }}
+      - -X github.com/zeta-chain/zetacore/pkg/constant.CommitHash={{ .Env.COMMIT }}
+      - -X github.com/zeta-chain/zetacore/pkg/constant.BuildTime={{ .Env.BUILDTIME }}
       - -X github.com/cosmos/cosmos-sdk/types.DBBackend=pebbledb
 
   - id: "zetaclientd"
diff --git a/Makefile b/Makefile
index 440a761186..b8a6d7415f 100644
--- a/Makefile
+++ b/Makefile
@@ -12,10 +12,10 @@ ldflags = -X github.com/cosmos/cosmos-sdk/version.Name=zetacore \
 	-X github.com/cosmos/cosmos-sdk/version.ClientName=zetaclientd \
 	-X github.com/cosmos/cosmos-sdk/version.Version=$(VERSION) \
 	-X github.com/cosmos/cosmos-sdk/version.Commit=$(COMMIT) \
-	-X github.com/zeta-chain/zetacore/pkg.Name=zetacored \
-	-X github.com/zeta-chain/zetacore/pkg.Version=$(VERSION) \
-	-X github.com/zeta-chain/zetacore/pkg.CommitHash=$(COMMIT) \
-	-X github.com/zeta-chain/zetacore/pkg.BuildTime=$(BUILDTIME) \
+	-X github.com/zeta-chain/zetacore/pkg/constant.Name=zetacored \
+	-X github.com/zeta-chain/zetacore/pkg/constant.Version=$(VERSION) \
+	-X github.com/zeta-chain/zetacore/pkg/constant.CommitHash=$(COMMIT) \
+	-X github.com/zeta-chain/zetacore/pkg/constant.BuildTime=$(BUILDTIME) \
 	-X github.com/cosmos/cosmos-sdk/types.DBBackend=pebbledb
 
 BUILD_FLAGS := -ldflags '$(ldflags)' -tags pebbledb,ledger
diff --git a/cmd/zetaclientd/start.go b/cmd/zetaclientd/start.go
index c591cd781c..56d77e0950 100644
--- a/cmd/zetaclientd/start.go
+++ b/cmd/zetaclientd/start.go
@@ -20,8 +20,8 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
 	"github.com/zeta-chain/go-tss/p2p"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/authz"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	observerTypes "github.com/zeta-chain/zetacore/x/observer/types"
 	mc "github.com/zeta-chain/zetacore/zetaclient"
 	appcontext "github.com/zeta-chain/zetacore/zetaclient/app_context"
@@ -170,7 +170,7 @@ func start(_ *cobra.Command, _ []string) error {
 	}
 	m.Start()
 
-	metrics.Info.WithLabelValues(pkg.Version).Set(1)
+	metrics.Info.WithLabelValues(constant.Version).Set(1)
 	metrics.LastStartTime.SetToCurrentTime()
 
 	var tssHistoricalList []observerTypes.TSS
diff --git a/cmd/zetaclientd/version.go b/cmd/zetaclientd/version.go
index 5c0c274253..0cdc1ac59e 100644
--- a/cmd/zetaclientd/version.go
+++ b/cmd/zetaclientd/version.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 
 	"github.com/spf13/cobra"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 var VersionCmd = &cobra.Command{
@@ -14,6 +14,6 @@ var VersionCmd = &cobra.Command{
 }
 
 func Version(_ *cobra.Command, _ []string) error {
-	fmt.Printf(pkg.Version)
+	fmt.Printf(constant.Version)
 	return nil
 }
diff --git a/cmd/zetatool/filterdeposit/btc.go b/cmd/zetatool/filterdeposit/btc.go
index a8ded3f08b..684bb4b428 100644
--- a/cmd/zetatool/filterdeposit/btc.go
+++ b/cmd/zetatool/filterdeposit/btc.go
@@ -13,7 +13,7 @@ import (
 
 	"github.com/spf13/cobra"
 	"github.com/zeta-chain/zetacore/cmd/zetatool/config"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 func NewBtcCmd() *cobra.Command {
@@ -162,7 +162,7 @@ func getHashList(cfg *config.Config, tssAddress string) ([]Deposit, error) {
 				if err != nil {
 					continue
 				}
-				if bytes.Equal(memoBytes, []byte(pkg.DonationMessage)) {
+				if bytes.Equal(memoBytes, []byte(constant.DonationMessage)) {
 					continue
 				}
 			} else {
diff --git a/cmd/zetatool/filterdeposit/evm.go b/cmd/zetatool/filterdeposit/evm.go
index 4e26ed1338..e9ed6b3d63 100644
--- a/cmd/zetatool/filterdeposit/evm.go
+++ b/cmd/zetatool/filterdeposit/evm.go
@@ -18,7 +18,7 @@ import (
 	"github.com/zeta-chain/protocol-contracts/pkg/contracts/evm/erc20custody.sol"
 	"github.com/zeta-chain/protocol-contracts/pkg/contracts/evm/zetaconnector.non-eth.sol"
 	"github.com/zeta-chain/zetacore/cmd/zetatool/config"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 const (
@@ -202,7 +202,7 @@ func getTSSDeposits(tssAddress string, startBlock uint64, endBlock uint64, apiKe
 
 	for _, tx := range txns {
 		if tx.To == tssAddress {
-			if strings.Compare(tx.Input, pkg.DonationMessage) == 0 {
+			if strings.Compare(tx.Input, constant.DonationMessage) == 0 {
 				continue // skip donation tx
 			}
 			if tx.TxReceiptStatus != "1" {
diff --git a/e2e/e2etests/test_donation.go b/e2e/e2etests/test_donation.go
index 07510df987..f6d9bac3ff 100644
--- a/e2e/e2etests/test_donation.go
+++ b/e2e/e2etests/test_donation.go
@@ -5,7 +5,7 @@ import (
 
 	"github.com/zeta-chain/zetacore/e2e/runner"
 	"github.com/zeta-chain/zetacore/e2e/utils"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 // TestDonationEther tests donation of ether to the tss address
@@ -19,7 +19,7 @@ func TestDonationEther(r *runner.E2ERunner, args []string) {
 		panic("Invalid amount specified for TestDonationEther.")
 	}
 
-	txDonation, err := r.SendEther(r.TSSAddress, amount, []byte(pkg.DonationMessage))
+	txDonation, err := r.SendEther(r.TSSAddress, amount, []byte(constant.DonationMessage))
 	if err != nil {
 		panic(err)
 	}
diff --git a/e2e/runner/bitcoin.go b/e2e/runner/bitcoin.go
index 687e3aa8f3..df0c2d1a23 100644
--- a/e2e/runner/bitcoin.go
+++ b/e2e/runner/bitcoin.go
@@ -16,8 +16,8 @@ import (
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/rs/zerolog/log"
 	"github.com/zeta-chain/zetacore/e2e/utils"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	"github.com/zeta-chain/zetacore/pkg/proofs"
 	"github.com/zeta-chain/zetacore/pkg/proofs/bitcoin"
 	crosschaintypes "github.com/zeta-chain/zetacore/x/crosschain/types"
@@ -119,7 +119,7 @@ func (runner *E2ERunner) DepositBTC(testHeader bool) {
 		0.11,
 		utxos[4:5],
 		btc,
-		[]byte(pkg.DonationMessage),
+		[]byte(constant.DonationMessage),
 		runner.BTCDeployerAddress,
 	)
 	if err != nil {
diff --git a/e2e/runner/setup_evm.go b/e2e/runner/setup_evm.go
index aef39cf338..e8ff909169 100644
--- a/e2e/runner/setup_evm.go
+++ b/e2e/runner/setup_evm.go
@@ -12,7 +12,7 @@ import (
 	"github.com/zeta-chain/zetacore/e2e/contracts/erc20"
 	"github.com/zeta-chain/zetacore/e2e/contracts/testdapp"
 	"github.com/zeta-chain/zetacore/e2e/utils"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 const (
@@ -62,7 +62,7 @@ func (runner *E2ERunner) SetupEVM(contractsDeployed bool) {
 
 	// donate to the TSS address to avoid account errors because deploying gas token ZRC20 will automatically mint
 	// gas token on ZetaChain to initialize the pool
-	txDonation, err := runner.SendEther(runner.TSSAddress, big.NewInt(101000000000000000), []byte(pkg.DonationMessage))
+	txDonation, err := runner.SendEther(runner.TSSAddress, big.NewInt(101000000000000000), []byte(constant.DonationMessage))
 	if err != nil {
 		panic(err)
 	}
diff --git a/pkg/constant.go b/pkg/constant/constant.go
similarity index 97%
rename from pkg/constant.go
rename to pkg/constant/constant.go
index c52094ac22..447eca98e5 100644
--- a/pkg/constant.go
+++ b/pkg/constant/constant.go
@@ -1,4 +1,4 @@
-package pkg
+package constant
 
 const (
 	// DonationMessage is the message for donation transactions
diff --git a/pkg/version.go b/pkg/constant/version.go
similarity index 81%
rename from pkg/version.go
rename to pkg/constant/version.go
index 6e1fc343d8..c8bd89866a 100644
--- a/pkg/version.go
+++ b/pkg/constant/version.go
@@ -1,4 +1,4 @@
-package pkg
+package constant
 
 var (
 	Name       = ""
diff --git a/rpc/namespaces/ethereum/web3/api.go b/rpc/namespaces/ethereum/web3/api.go
index 07ecc755e6..de40837ee1 100644
--- a/rpc/namespaces/ethereum/web3/api.go
+++ b/rpc/namespaces/ethereum/web3/api.go
@@ -21,7 +21,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 )
 
 // PublicAPI is the web3_ prefixed set of APIs in the Web3 JSON-RPC spec.
@@ -34,7 +34,7 @@ func NewPublicAPI() *PublicAPI {
 
 // ClientVersion returns the client version in the Web3 user agent format.
 func (a *PublicAPI) ClientVersion() string {
-	return fmt.Sprintf("%s/%s/%s/%s", pkg.Name, pkg.Version, runtime.GOOS+"-"+runtime.GOARCH, runtime.Version())
+	return fmt.Sprintf("%s/%s/%s/%s", constant.Name, constant.Version, runtime.GOOS+"-"+runtime.GOARCH, runtime.Version())
 }
 
 // Sha3 returns the keccak-256 hash of the passed-in input.
diff --git a/x/crosschain/keeper/msg_server_migrate_tss_funds.go b/x/crosschain/keeper/msg_server_migrate_tss_funds.go
index a9ad02429f..fa0c7fb1f4 100644
--- a/x/crosschain/keeper/msg_server_migrate_tss_funds.go
+++ b/x/crosschain/keeper/msg_server_migrate_tss_funds.go
@@ -12,8 +12,8 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 	tmbytes "github.com/tendermint/tendermint/libs/bytes"
 	tmtypes "github.com/tendermint/tendermint/types"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	zetacrypto "github.com/zeta-chain/zetacore/pkg/crypto"
 	"github.com/zeta-chain/zetacore/pkg/gas"
 
@@ -87,7 +87,7 @@ func (k Keeper) MigrateTSSFundsForChain(ctx sdk.Context, chainID int64, amount s
 		Creator:        "",
 		Index:          index,
 		ZetaFees:       sdkmath.Uint{},
-		RelayedMessage: fmt.Sprintf("%s:%s", pkg.CmdMigrateTssFunds, "Funds Migrator Admin Cmd"),
+		RelayedMessage: fmt.Sprintf("%s:%s", constant.CmdMigrateTssFunds, "Funds Migrator Admin Cmd"),
 		CctxStatus: &types.Status{
 			Status:              types.CctxStatus_PendingOutbound,
 			StatusMessage:       "",
diff --git a/x/crosschain/keeper/msg_server_whitelist_erc20.go b/x/crosschain/keeper/msg_server_whitelist_erc20.go
index 9bc6aba87d..e1b4dc705d 100644
--- a/x/crosschain/keeper/msg_server_whitelist_erc20.go
+++ b/x/crosschain/keeper/msg_server_whitelist_erc20.go
@@ -6,6 +6,7 @@ import (
 	"math/big"
 
 	"github.com/zeta-chain/zetacore/pkg/coin"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	authoritytypes "github.com/zeta-chain/zetacore/x/authority/types"
 
 	errorsmod "cosmossdk.io/errors"
@@ -16,7 +17,6 @@ import (
 	ethcommon "github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/x/crosschain/types"
 	fungibletypes "github.com/zeta-chain/zetacore/x/fungible/types"
 )
@@ -116,7 +116,7 @@ func (k msgServer) WhitelistERC20(goCtx context.Context, msg *types.MsgWhitelist
 		Creator:        msg.Creator,
 		Index:          index,
 		ZetaFees:       sdk.NewUint(0),
-		RelayedMessage: fmt.Sprintf("%s:%s", pkg.CmdWhitelistERC20, msg.Erc20Address),
+		RelayedMessage: fmt.Sprintf("%s:%s", constant.CmdWhitelistERC20, msg.Erc20Address),
 		CctxStatus: &types.Status{
 			Status:              types.CctxStatus_PendingOutbound,
 			StatusMessage:       "",
diff --git a/x/crosschain/keeper/msg_server_whitelist_erc20_test.go b/x/crosschain/keeper/msg_server_whitelist_erc20_test.go
index e208989e5e..66a1bcb0e9 100644
--- a/x/crosschain/keeper/msg_server_whitelist_erc20_test.go
+++ b/x/crosschain/keeper/msg_server_whitelist_erc20_test.go
@@ -9,7 +9,7 @@ import (
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	ethcommon "github.com/ethereum/go-ethereum/common"
 	"github.com/stretchr/testify/require"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	keepertest "github.com/zeta-chain/zetacore/testutil/keeper"
 	"github.com/zeta-chain/zetacore/testutil/sample"
 	crosschainkeeper "github.com/zeta-chain/zetacore/x/crosschain/keeper"
@@ -65,7 +65,7 @@ func TestKeeper_WhitelistERC20(t *testing.T) {
 		require.EqualValues(t, erc20Address, fc.Asset)
 		cctx, found := k.GetCrossChainTx(ctx, cctxIndex)
 		require.True(t, found)
-		require.EqualValues(t, fmt.Sprintf("%s:%s", pkg.CmdWhitelistERC20, erc20Address), cctx.RelayedMessage)
+		require.EqualValues(t, fmt.Sprintf("%s:%s", constant.CmdWhitelistERC20, erc20Address), cctx.RelayedMessage)
 
 		// check gas limit is set
 		gasLimit, err := zk.FungibleKeeper.QueryGasLimit(ctx, ethcommon.HexToAddress(zrc20))
diff --git a/zetaclient/bitcoin/bitcoin_client.go b/zetaclient/bitcoin/bitcoin_client.go
index 60f1f83d85..8f9c1f9463 100644
--- a/zetaclient/bitcoin/bitcoin_client.go
+++ b/zetaclient/bitcoin/bitcoin_client.go
@@ -13,9 +13,9 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
 	"github.com/zeta-chain/zetacore/pkg/coin"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	"github.com/zeta-chain/zetacore/pkg/proofs"
 	corecontext "github.com/zeta-chain/zetacore/zetaclient/core_context"
 
@@ -772,7 +772,7 @@ func GetBtcEvent(
 					logger.Warn().Err(err).Msgf("error hex decoding memo")
 					return nil, fmt.Errorf("error hex decoding memo: %s", err)
 				}
-				if bytes.Equal(memoBytes, []byte(pkg.DonationMessage)) {
+				if bytes.Equal(memoBytes, []byte(constant.DonationMessage)) {
 					logger.Info().Msgf("donation tx: %s; value %f", tx.Txid, value)
 					return nil, fmt.Errorf("donation tx: %s; value %f", tx.Txid, value)
 				}
diff --git a/zetaclient/evm/evm_signer.go b/zetaclient/evm/evm_signer.go
index 974d44dbca..a5f6114822 100644
--- a/zetaclient/evm/evm_signer.go
+++ b/zetaclient/evm/evm_signer.go
@@ -20,9 +20,9 @@ import (
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/zeta-chain/protocol-contracts/pkg/contracts/evm/erc20custody.sol"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
 	"github.com/zeta-chain/zetacore/pkg/coin"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	crosschainkeeper "github.com/zeta-chain/zetacore/x/crosschain/keeper"
 	"github.com/zeta-chain/zetacore/x/crosschain/types"
 	observertypes "github.com/zeta-chain/zetacore/x/observer/types"
@@ -297,9 +297,9 @@ func (signer *Signer) SignWithdrawTx(txData *OutBoundTransactionData) (*ethtypes
 //	cmd_migrate_tss_funds
 func (signer *Signer) SignCommandTx(txData *OutBoundTransactionData, cmd string, params string) (*ethtypes.Transaction, error) {
 	switch cmd {
-	case pkg.CmdWhitelistERC20:
+	case constant.CmdWhitelistERC20:
 		return signer.SignWhitelistERC20Cmd(txData, params)
-	case pkg.CmdMigrateTssFunds:
+	case constant.CmdMigrateTssFunds:
 		return signer.SignMigrateTssFundsCmd(txData)
 	}
 	return nil, fmt.Errorf("SignCommandTx: unknown command %s", cmd)
diff --git a/zetaclient/evm/evm_signer_test.go b/zetaclient/evm/evm_signer_test.go
index 5f82d9bf91..b78a3d1c26 100644
--- a/zetaclient/evm/evm_signer_test.go
+++ b/zetaclient/evm/evm_signer_test.go
@@ -8,8 +8,8 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/rs/zerolog"
 	"github.com/stretchr/testify/require"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	"github.com/zeta-chain/zetacore/testutil/sample"
 	"github.com/zeta-chain/zetacore/x/crosschain/types"
 	crosschaintypes "github.com/zeta-chain/zetacore/x/crosschain/types"
@@ -225,7 +225,7 @@ func TestSigner_SignCommandTx(t *testing.T) {
 	require.NoError(t, err)
 
 	t.Run("SignCommandTx CmdWhitelistERC20", func(t *testing.T) {
-		cmd := pkg.CmdWhitelistERC20
+		cmd := constant.CmdWhitelistERC20
 		params := ConnectorAddress.Hex()
 		// Call SignCommandTx
 		tx, err := evmSigner.SignCommandTx(txData, cmd, params)
@@ -242,7 +242,7 @@ func TestSigner_SignCommandTx(t *testing.T) {
 	})
 
 	t.Run("SignCommandTx CmdMigrateTssFunds", func(t *testing.T) {
-		cmd := pkg.CmdMigrateTssFunds
+		cmd := constant.CmdMigrateTssFunds
 		// Call SignCommandTx
 		tx, err := evmSigner.SignCommandTx(txData, cmd, "")
 		require.NoError(t, err)
diff --git a/zetaclient/evm/inbounds.go b/zetaclient/evm/inbounds.go
index a8dee66c11..2daa4fc0c1 100644
--- a/zetaclient/evm/inbounds.go
+++ b/zetaclient/evm/inbounds.go
@@ -20,7 +20,7 @@ import (
 	clienttypes "github.com/zeta-chain/zetacore/zetaclient/types"
 
 	ethcommon "github.com/ethereum/go-ethereum/common"
-	"github.com/zeta-chain/zetacore/pkg"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	"github.com/zeta-chain/zetacore/x/crosschain/types"
 	"github.com/zeta-chain/zetacore/zetaclient/zetabridge"
 	"golang.org/x/net/context"
@@ -236,7 +236,7 @@ func (ob *ChainClient) BuildInboundVoteMsgForDepositedEvent(event *erc20custody.
 	}
 
 	// donation check
-	if bytes.Equal(event.Message, []byte(pkg.DonationMessage)) {
+	if bytes.Equal(event.Message, []byte(constant.DonationMessage)) {
 		ob.logger.ExternalChainWatcher.Info().Msgf("thank you rich folk for your donation! tx %s chain %d", event.Raw.TxHash.Hex(), ob.chain.ChainId)
 		return nil
 	}
@@ -332,7 +332,7 @@ func (ob *ChainClient) BuildInboundVoteMsgForTokenSentToTSS(tx *ethrpc.Transacti
 	// donation check
 	// #nosec G703 err is already checked
 	data, _ := hex.DecodeString(message)
-	if bytes.Equal(data, []byte(pkg.DonationMessage)) {
+	if bytes.Equal(data, []byte(constant.DonationMessage)) {
 		ob.logger.ExternalChainWatcher.Info().Msgf("thank you rich folk for your donation! tx %s chain %d", tx.Hash, ob.chain.ChainId)
 		return nil
 	}
diff --git a/zetaclient/evm/inbounds_test.go b/zetaclient/evm/inbounds_test.go
index e4625177e7..e24c66b4d5 100644
--- a/zetaclient/evm/inbounds_test.go
+++ b/zetaclient/evm/inbounds_test.go
@@ -10,9 +10,9 @@ import (
 	lru "github.com/hashicorp/golang-lru"
 	"github.com/onrik/ethrpc"
 	"github.com/stretchr/testify/require"
-	"github.com/zeta-chain/zetacore/pkg"
 	"github.com/zeta-chain/zetacore/pkg/chains"
 	"github.com/zeta-chain/zetacore/pkg/coin"
+	"github.com/zeta-chain/zetacore/pkg/constant"
 	observertypes "github.com/zeta-chain/zetacore/x/observer/types"
 	"github.com/zeta-chain/zetacore/zetaclient/config"
 	"github.com/zeta-chain/zetacore/zetaclient/evm"
@@ -205,7 +205,7 @@ func TestEVM_CheckAndVoteInboundTokenGas(t *testing.T) {
 	})
 	t.Run("should not act on nil message", func(t *testing.T) {
 		tx, receipt, _ := testutils.LoadEVMIntxNReceiptNCctx(t, chainID, intxHash, coin.CoinType_Gas)
-		tx.Input = hex.EncodeToString([]byte(pkg.DonationMessage)) // donation will result in nil message
+		tx.Input = hex.EncodeToString([]byte(constant.DonationMessage)) // donation will result in nil message
 		require.NoError(t, evm.ValidateEvmTransaction(tx))
 		lastBlock := receipt.BlockNumber.Uint64() + confirmation
 
@@ -302,7 +302,7 @@ func TestEVM_BuildInboundVoteMsgForDepositedEvent(t *testing.T) {
 		require.Nil(t, msg)
 	})
 	t.Run("should return nil msg on donation transaction", func(t *testing.T) {
-		event.Message = []byte(pkg.DonationMessage)
+		event.Message = []byte(constant.DonationMessage)
 		msg := ob.BuildInboundVoteMsgForDepositedEvent(event, sender)
 		require.Nil(t, msg)
 	})