diff --git a/app/genesis.go b/app/genesis.go
index 2e7a7fa..0a9a792 100644
--- a/app/genesis.go
+++ b/app/genesis.go
@@ -13,7 +13,6 @@ import (
 	ibctypes "github.com/cosmos/ibc-go/v7/modules/core/types"
 
 	opchildtypes "github.com/initia-labs/OPinit/x/opchild/types"
-	"github.com/initia-labs/miniwasm/types"
 
 	auctiontypes "github.com/skip-mev/block-sdk/x/auction/types"
 )
@@ -28,19 +27,19 @@ import (
 type GenesisState map[string]json.RawMessage
 
 // NewDefaultGenesisState generates the default state for the application.
-func NewDefaultGenesisState(cdc codec.JSONCodec, mbm module.BasicManager) GenesisState {
+func NewDefaultGenesisState(cdc codec.JSONCodec, mbm module.BasicManager, denom string) GenesisState {
 	return GenesisState(mbm.DefaultGenesis(cdc)).
 		ConfigureMinGasPrices(cdc).
 		ConfigureICA(cdc).
 		ConfigureIBCAllowedClients(cdc).
-		ConfigureAuctionFee(cdc)
+		ConfigureAuctionFee(cdc, denom)
 }
 
-func (genState GenesisState) ConfigureAuctionFee(cdc codec.JSONCodec) GenesisState {
+func (genState GenesisState) ConfigureAuctionFee(cdc codec.JSONCodec, denom string) GenesisState {
 	var auctionGenState auctiontypes.GenesisState
 	cdc.MustUnmarshalJSON(genState[auctiontypes.ModuleName], &auctionGenState)
-	auctionGenState.Params.ReserveFee.Denom = types.BaseDenom
-	auctionGenState.Params.MinBidIncrement.Denom = types.BaseDenom
+	auctionGenState.Params.ReserveFee.Denom = denom
+	auctionGenState.Params.MinBidIncrement.Denom = denom
 	genState[auctiontypes.ModuleName] = cdc.MustMarshalJSON(&auctionGenState)
 
 	return genState
diff --git a/app/test_helpers.go b/app/test_helpers.go
index 3501a7d..30c9092 100644
--- a/app/test_helpers.go
+++ b/app/test_helpers.go
@@ -22,6 +22,7 @@ import (
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 
 	opchildtypes "github.com/initia-labs/OPinit/x/opchild/types"
+	"github.com/initia-labs/miniwasm/types"
 
 	wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
 )
@@ -64,7 +65,7 @@ func setup(db *dbm.DB, withGenesis bool) (*MinitiaApp, GenesisState) {
 	)
 
 	if withGenesis {
-		return app, NewDefaultGenesisState(encCdc.Marshaler, ModuleBasics)
+		return app, NewDefaultGenesisState(encCdc.Marshaler, ModuleBasics, types.BaseDenom)
 	}
 
 	return app, GenesisState{}
@@ -78,6 +79,13 @@ func SetupWithGenesisAccounts(
 ) *MinitiaApp {
 	app, genesisState := setup(nil, true)
 
+	if len(genAccs) == 0 {
+		privAcc := secp256k1.GenPrivKey()
+		genAccs = []authtypes.GenesisAccount{
+			authtypes.NewBaseAccount(privAcc.PubKey().Address().Bytes(), privAcc.PubKey(), 0, 0),
+		}
+	}
+
 	// set genesis accounts
 	authGenesis := authtypes.NewGenesisState(authtypes.DefaultParams(), genAccs)
 	genesisState[authtypes.ModuleName] = app.AppCodec().MustMarshalJSON(authGenesis)
@@ -94,13 +102,6 @@ func SetupWithGenesisAccounts(
 		valSet = tmtypes.NewValidatorSet([]*tmtypes.Validator{validator})
 	}
 
-	if genAccs == nil || len(genAccs) == 0 {
-		privAcc := secp256k1.GenPrivKey()
-		genAccs = []authtypes.GenesisAccount{
-			authtypes.NewBaseAccount(privAcc.PubKey().Address().Bytes(), privAcc.PubKey(), 0, 0),
-		}
-	}
-
 	validators := make([]opchildtypes.Validator, 0, len(valSet.Validators))
 
 	for _, val := range valSet.Validators {
diff --git a/cmd/minitiad/init.go b/cmd/minitiad/init.go
index 6d89d60..3998c5e 100644
--- a/cmd/minitiad/init.go
+++ b/cmd/minitiad/init.go
@@ -25,6 +25,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/genutil"
 
 	minitiaapp "github.com/initia-labs/miniwasm/app"
+	"github.com/initia-labs/miniwasm/types"
 )
 
 const (
@@ -33,6 +34,9 @@ const (
 
 	// FlagRecover defines a flag to initialize the private validator key from a specific seed.
 	FlagRecover = "recover"
+
+	// FlagDenom defines a flag to set default denom a chain operator want to use.
+	FlagDenom = "denom"
 )
 
 type printInfo struct {
@@ -85,6 +89,11 @@ func InitCmd(mbm module.BasicManager, defaultNodeHome string) *cobra.Command {
 				chainID = fmt.Sprintf("test-chain-%v", cometrand.Str(6))
 			}
 
+			denom, err := cmd.Flags().GetString(FlagDenom)
+			if err != nil {
+				return err
+			}
+
 			// Get bip39 mnemonic
 			var mnemonic string
 			recover, _ := cmd.Flags().GetBool(FlagRecover)
@@ -116,7 +125,7 @@ func InitCmd(mbm module.BasicManager, defaultNodeHome string) *cobra.Command {
 			}
 
 			appState, err := json.MarshalIndent(
-				minitiaapp.NewDefaultGenesisState(cdc, mbm), "", " ",
+				minitiaapp.NewDefaultGenesisState(cdc, mbm, denom), "", " ",
 			)
 			if err != nil {
 				return errors.Wrap(err, "Failed to marshall default genesis state")
@@ -153,6 +162,7 @@ func InitCmd(mbm module.BasicManager, defaultNodeHome string) *cobra.Command {
 	cmd.Flags().BoolP(FlagOverwrite, "o", false, "overwrite the genesis.json file")
 	cmd.Flags().Bool(FlagRecover, false, "provide seed phrase to recover existing key instead of creating")
 	cmd.Flags().String(flags.FlagChainID, "", "genesis file chain-id, if left blank will be randomly created")
+	cmd.Flags().String(FlagDenom, types.BaseDenom, "genesis file default denom")
 
 	return cmd
 }
diff --git a/cmd/minitiad/root.go b/cmd/minitiad/root.go
index bf4bfb0..2ca8193 100644
--- a/cmd/minitiad/root.go
+++ b/cmd/minitiad/root.go
@@ -40,9 +40,6 @@ import (
 	"github.com/initia-labs/miniwasm/app/params"
 )
 
-// missing flag from cosmos-sdk
-const flagIAVLCacheSize = "iavl-cache-size"
-
 // NewRootCmd creates a new root command for initiad. It is called once in the
 // main function.
 func NewRootCmd() (*cobra.Command, params.EncodingConfig) {