diff --git a/core/vm/runtime/runtime.go b/core/vm/runtime/runtime.go
index d10457e7fa..34542f3fd1 100644
--- a/core/vm/runtime/runtime.go
+++ b/core/vm/runtime/runtime.go
@@ -54,7 +54,7 @@ type Config struct {
 }
 
 // sets defaults on the config
-func setDefaults(cfg *Config) {
+func SetDefaults(cfg *Config) {
 	if cfg.ChainConfig == nil {
 		cfg.ChainConfig = &params.ChainConfig{
 			ChainID:             big.NewInt(1),
@@ -111,7 +111,7 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
 	if cfg == nil {
 		cfg = new(Config)
 	}
-	setDefaults(cfg)
+	SetDefaults(cfg)
 
 	if cfg.State == nil {
 		cfg.State, _ = state.New(types.EmptyRootHash, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
@@ -145,7 +145,7 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
 	if cfg == nil {
 		cfg = new(Config)
 	}
-	setDefaults(cfg)
+	SetDefaults(cfg)
 
 	if cfg.State == nil {
 		cfg.State, _ = state.New(types.EmptyRootHash, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
@@ -175,7 +175,7 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
 // Call, unlike Execute, requires a config and also requires the State field to
 // be set.
 func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) {
-	setDefaults(cfg)
+	SetDefaults(cfg)
 
 	var (
 		vmenv   = NewEnv(cfg)
diff --git a/core/vm/runtime/runtime_test.go b/core/vm/runtime/runtime_test.go
index 796d3b4434..92d339d06c 100644
--- a/core/vm/runtime/runtime_test.go
+++ b/core/vm/runtime/runtime_test.go
@@ -42,7 +42,7 @@ import (
 
 func TestDefaults(t *testing.T) {
 	cfg := new(Config)
-	setDefaults(cfg)
+	SetDefaults(cfg)
 
 	if cfg.Difficulty == nil {
 		t.Error("expected difficulty to be non nil")
@@ -326,7 +326,7 @@ func TestBlockhash(t *testing.T) {
 // state, this should not be used, since it does not reset the state between runs.
 func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode string, b *testing.B) {
 	cfg := new(Config)
-	setDefaults(cfg)
+	SetDefaults(cfg)
 	cfg.State, _ = state.New(types.EmptyRootHash, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
 	cfg.GasLimit = gas
 	if len(tracerCode) > 0 {
diff --git a/lib/ethapi/api.go b/lib/ethapi/api.go
index a2593fdfd4..374d0f0a35 100644
--- a/lib/ethapi/api.go
+++ b/lib/ethapi/api.go
@@ -449,7 +449,7 @@ func (s *PersonalAccountAPI) signTransaction(ctx context.Context, args *Transact
 		return nil, err
 	}
 	// Set some sanity defaults and terminate on failure
-	if err := args.setDefaults(ctx, s.b); err != nil {
+	if err := args.SetDefaults(ctx, s.b); err != nil {
 		return nil, err
 	}
 	// Assemble the transaction and sign with the wallet
@@ -1527,7 +1527,7 @@ func AccessList(ctx context.Context, b Backend, blockNrOrHash rpc.BlockNumberOrH
 	}
 
 	// Ensure any missing fields are filled, extract the recipient and input data
-	if err := args.setDefaults(ctx, b); err != nil {
+	if err := args.SetDefaults(ctx, b); err != nil {
 		return nil, 0, nil, err
 	}
 	var to common.Address
@@ -1829,7 +1829,7 @@ func (s *TransactionAPI) SendTransaction(ctx context.Context, args TransactionAr
 	}
 
 	// Set some sanity defaults and terminate on failure
-	if err := args.setDefaults(ctx, s.b); err != nil {
+	if err := args.SetDefaults(ctx, s.b); err != nil {
 		return common.Hash{}, err
 	}
 	// Assemble the transaction and sign with the wallet
@@ -1847,7 +1847,7 @@ func (s *TransactionAPI) SendTransaction(ctx context.Context, args TransactionAr
 // processing (signing + broadcast).
 func (s *TransactionAPI) FillTransaction(ctx context.Context, args TransactionArgs) (*SignTransactionResult, error) {
 	// Set some sanity defaults and terminate on failure
-	if err := args.setDefaults(ctx, s.b); err != nil {
+	if err := args.SetDefaults(ctx, s.b); err != nil {
 		return nil, err
 	}
 	// Assemble the transaction and obtain rlp
@@ -1913,7 +1913,7 @@ func (s *TransactionAPI) SignTransaction(ctx context.Context, args TransactionAr
 	if args.Nonce == nil {
 		return nil, errors.New("nonce not specified")
 	}
-	if err := args.setDefaults(ctx, s.b); err != nil {
+	if err := args.SetDefaults(ctx, s.b); err != nil {
 		return nil, err
 	}
 	// Before actually sign the transaction, ensure the transaction fee is reasonable.
@@ -1962,7 +1962,7 @@ func (s *TransactionAPI) Resend(ctx context.Context, sendArgs TransactionArgs, g
 	if sendArgs.Nonce == nil {
 		return common.Hash{}, errors.New("missing transaction nonce in transaction spec")
 	}
-	if err := sendArgs.setDefaults(ctx, s.b); err != nil {
+	if err := sendArgs.SetDefaults(ctx, s.b); err != nil {
 		return common.Hash{}, err
 	}
 	matchTx := sendArgs.toTransaction()
diff --git a/lib/ethapi/transaction_args.go b/lib/ethapi/transaction_args.go
index e4cf81a3f4..c0a239d4f5 100644
--- a/lib/ethapi/transaction_args.go
+++ b/lib/ethapi/transaction_args.go
@@ -74,8 +74,8 @@ func (args *TransactionArgs) data() []byte {
 	return nil
 }
 
-// setDefaults fills in default values for unspecified tx fields.
-func (args *TransactionArgs) setDefaults(ctx context.Context, b Backend) error {
+// SetDefaults fills in default values for unspecified tx fields.
+func (args *TransactionArgs) SetDefaults(ctx context.Context, b Backend) error {
 	if err := args.setFeeDefaults(ctx, b); err != nil {
 		return err
 	}
@@ -280,7 +280,7 @@ func (args *TransactionArgs) ToMessage(globalGasCap uint64, baseFee *big.Int) (*
 }
 
 // toTransaction converts the arguments to a transaction.
-// This assumes that setDefaults has been called.
+// This assumes that SetDefaults has been called.
 func (args *TransactionArgs) toTransaction() *types.Transaction {
 	var data types.TxData
 	switch {
@@ -325,7 +325,7 @@ func (args *TransactionArgs) toTransaction() *types.Transaction {
 }
 
 // ToTransaction converts the arguments to a transaction.
-// This assumes that setDefaults has been called.
+// This assumes that SetDefaults has been called.
 func (args *TransactionArgs) ToTransaction() *types.Transaction {
 	return args.toTransaction()
 }