diff --git a/core/txpool/legacypool/gen_config.go b/core/txpool/legacypool/gen_config.go
new file mode 100644
index 0000000000..a971b0ece3
--- /dev/null
+++ b/core/txpool/legacypool/gen_config.go
@@ -0,0 +1,106 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package legacypool
+
+import (
+	"time"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// MarshalTOML marshals as TOML.
+func (c Config) MarshalTOML() (interface{}, error) {
+	type Config struct {
+		Locals            []common.Address
+		NoLocals          bool
+		Journal           string
+		Rejournal         time.Duration
+		PriceLimit        uint64
+		PriceBump         uint64
+		AccountSlots      uint64
+		GlobalSlots       uint64
+		AccountQueue      uint64
+		GlobalQueue       uint64
+		OverflowPoolSlots uint64
+		Lifetime          time.Duration
+		ReannounceTime    time.Duration
+	}
+	var enc Config
+	enc.Locals = c.Locals
+	enc.NoLocals = c.NoLocals
+	enc.Journal = c.Journal
+	enc.Rejournal = c.Rejournal
+	enc.PriceLimit = c.PriceLimit
+	enc.PriceBump = c.PriceBump
+	enc.AccountSlots = c.AccountSlots
+	enc.GlobalSlots = c.GlobalSlots
+	enc.AccountQueue = c.AccountQueue
+	enc.GlobalQueue = c.GlobalQueue
+	enc.OverflowPoolSlots = c.OverflowPoolSlots
+	enc.Lifetime = c.Lifetime
+	enc.ReannounceTime = c.ReannounceTime
+	return &enc, nil
+}
+
+// UnmarshalTOML unmarshals from TOML.
+func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
+	type Config struct {
+		Locals            []common.Address
+		NoLocals          *bool
+		Journal           *string
+		Rejournal         *time.Duration
+		PriceLimit        *uint64
+		PriceBump         *uint64
+		AccountSlots      *uint64
+		GlobalSlots       *uint64
+		AccountQueue      *uint64
+		GlobalQueue       *uint64
+		OverflowPoolSlots *uint64
+		Lifetime          *time.Duration
+		ReannounceTime    *time.Duration
+	}
+	var dec Config
+	if err := unmarshal(&dec); err != nil {
+		return err
+	}
+	if dec.Locals != nil {
+		c.Locals = dec.Locals
+	}
+	if dec.NoLocals != nil {
+		c.NoLocals = *dec.NoLocals
+	}
+	if dec.Journal != nil {
+		c.Journal = *dec.Journal
+	}
+	if dec.Rejournal != nil {
+		c.Rejournal = *dec.Rejournal
+	}
+	if dec.PriceLimit != nil {
+		c.PriceLimit = *dec.PriceLimit
+	}
+	if dec.PriceBump != nil {
+		c.PriceBump = *dec.PriceBump
+	}
+	if dec.AccountSlots != nil {
+		c.AccountSlots = *dec.AccountSlots
+	}
+	if dec.GlobalSlots != nil {
+		c.GlobalSlots = *dec.GlobalSlots
+	}
+	if dec.AccountQueue != nil {
+		c.AccountQueue = *dec.AccountQueue
+	}
+	if dec.GlobalQueue != nil {
+		c.GlobalQueue = *dec.GlobalQueue
+	}
+	if dec.OverflowPoolSlots != nil {
+		c.OverflowPoolSlots = *dec.OverflowPoolSlots
+	}
+	if dec.Lifetime != nil {
+		c.Lifetime = *dec.Lifetime
+	}
+	if dec.ReannounceTime != nil {
+		c.ReannounceTime = *dec.ReannounceTime
+	}
+	return nil
+}
diff --git a/core/txpool/legacypool/legacypool.go b/core/txpool/legacypool/legacypool.go
index 56b3fc7329..9fa1f4a264 100644
--- a/core/txpool/legacypool/legacypool.go
+++ b/core/txpool/legacypool/legacypool.go
@@ -141,6 +141,8 @@ type BlockChain interface {
 }
 
 // Config are the configuration parameters of the transaction pool.
+//
+//go:generate go run github.com/fjl/gencodec -type Config -formats toml -out gen_config.go
 type Config struct {
 	Locals    []common.Address // Addresses that should be treated by default as local
 	NoLocals  bool             // Whether local transaction handling should be disabled
@@ -161,11 +163,13 @@ type Config struct {
 }
 
 // DefaultConfig contains the default configurations for the transaction pool.
+//
+//go:generate go run github.com/fjl/gencodec -type Config -formats toml -out gen_config.go
 var DefaultConfig = Config{
 	Journal:   "transactions.rlp",
 	Rejournal: time.Hour,
 
-	PriceLimit: 1,
+	PriceLimit: 1000000000, // by default 1 gwei
 	PriceBump:  10,
 
 	AccountSlots:      16,
diff --git a/eth/gasprice/gasprice.go b/eth/gasprice/gasprice.go
index e43501b19b..a447ab9b23 100644
--- a/eth/gasprice/gasprice.go
+++ b/eth/gasprice/gasprice.go
@@ -40,6 +40,7 @@ var (
 	DefaultIgnorePrice = big.NewInt(4 * params.Wei)
 )
 
+//go:generate go run github.com/fjl/gencodec -type Config -formats toml -out gen_config.go
 type Config struct {
 	Blocks           int
 	Percentile       int
diff --git a/eth/gasprice/gen_config.go b/eth/gasprice/gen_config.go
new file mode 100644
index 0000000000..fe4dcb559b
--- /dev/null
+++ b/eth/gasprice/gen_config.go
@@ -0,0 +1,68 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package gasprice
+
+import (
+	"math/big"
+)
+
+// MarshalTOML marshals as TOML.
+func (c Config) MarshalTOML() (interface{}, error) {
+	type Config struct {
+		Blocks           int
+		Percentile       int
+		MaxHeaderHistory uint64
+		MaxBlockHistory  uint64
+		MaxPrice         *big.Int `toml:",omitempty"`
+		IgnorePrice      *big.Int `toml:",omitempty"`
+		OracleThreshold  int      `toml:",omitempty"`
+	}
+	var enc Config
+	enc.Blocks = c.Blocks
+	enc.Percentile = c.Percentile
+	enc.MaxHeaderHistory = c.MaxHeaderHistory
+	enc.MaxBlockHistory = c.MaxBlockHistory
+	enc.MaxPrice = c.MaxPrice
+	enc.IgnorePrice = c.IgnorePrice
+	enc.OracleThreshold = c.OracleThreshold
+	return &enc, nil
+}
+
+// UnmarshalTOML unmarshals from TOML.
+func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
+	type Config struct {
+		Blocks           *int
+		Percentile       *int
+		MaxHeaderHistory *uint64
+		MaxBlockHistory  *uint64
+		MaxPrice         *big.Int `toml:",omitempty"`
+		IgnorePrice      *big.Int `toml:",omitempty"`
+		OracleThreshold  *int     `toml:",omitempty"`
+	}
+	var dec Config
+	if err := unmarshal(&dec); err != nil {
+		return err
+	}
+	if dec.Blocks != nil {
+		c.Blocks = *dec.Blocks
+	}
+	if dec.Percentile != nil {
+		c.Percentile = *dec.Percentile
+	}
+	if dec.MaxHeaderHistory != nil {
+		c.MaxHeaderHistory = *dec.MaxHeaderHistory
+	}
+	if dec.MaxBlockHistory != nil {
+		c.MaxBlockHistory = *dec.MaxBlockHistory
+	}
+	if dec.MaxPrice != nil {
+		c.MaxPrice = dec.MaxPrice
+	}
+	if dec.IgnorePrice != nil {
+		c.IgnorePrice = dec.IgnorePrice
+	}
+	if dec.OracleThreshold != nil {
+		c.OracleThreshold = *dec.OracleThreshold
+	}
+	return nil
+}