diff --git a/core/txpool/lending_pool.go b/core/txpool/lending_pool.go
index 333626c125..2f4bab9a8a 100644
--- a/core/txpool/lending_pool.go
+++ b/core/txpool/lending_pool.go
@@ -143,7 +143,6 @@ type LendingPool struct {
 	all       map[common.Hash]*types.LendingTransaction // All transactions to allow lookups
 	wg        sync.WaitGroup                            // for shutdown sync
 	homestead bool
-	IsSigner  func(address common.Address) bool
 }
 
 // NewLendingPool creates a new transaction pool to gather, sort and filter inbound
diff --git a/core/txpool/order_pool.go b/core/txpool/order_pool.go
index b946dc2e54..123d36f8bd 100644
--- a/core/txpool/order_pool.go
+++ b/core/txpool/order_pool.go
@@ -152,7 +152,6 @@ type OrderPool struct {
 	all       map[common.Hash]*types.OrderTransaction // All transactions to allow lookups
 	wg        sync.WaitGroup                          // for shutdown sync
 	homestead bool
-	IsSigner  func(address common.Address) bool
 }
 
 // NewOrderPool creates a new transaction pool to gather, sort and filter inbound
diff --git a/core/txpool/txpool.go b/core/txpool/txpool.go
index b893006924..0f7354e9e3 100644
--- a/core/txpool/txpool.go
+++ b/core/txpool/txpool.go
@@ -289,7 +289,7 @@ type TxPool struct {
 
 	changesSinceReorg int // A counter for how many drops we've performed in-between reorg.
 
-	IsSigner         func(address common.Address) bool
+	isSigner         func(address common.Address) bool
 	trc21FeeCapacity map[common.Address]*big.Int
 }
 
@@ -623,7 +623,7 @@ func (pool *TxPool) validateTxBasics(tx *types.Transaction, local bool) error {
 		MaxSize: txMaxSize,
 		MinTip:  pool.gasTip.Load(),
 		NotSigner: func(from common.Address) bool {
-			return pool.IsSigner != nil && !pool.IsSigner(from)
+			return pool.IsNotSigner(from)
 		},
 	}
 	if local {
@@ -718,7 +718,7 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (replaced bool, err e
 
 	// already validated
 	from, _ := types.Sender(pool.signer, tx)
-	if tx.IsSpecialTransaction() && pool.IsSigner != nil && pool.IsSigner(from) && pool.pendingNonces.get(from) == tx.Nonce() {
+	if tx.IsSpecialTransaction() && pool.IsSigner(from) && pool.pendingNonces.get(from) == tx.Nonce() {
 		return pool.promoteSpecialTx(from, tx, isLocal)
 	}
 
@@ -1707,6 +1707,18 @@ func (pool *TxPool) demoteUnexecutables() {
 	}
 }
 
+func (pool *TxPool) SetSigner(f func(address common.Address) bool) {
+	pool.isSigner = f
+}
+
+func (pool *TxPool) IsSigner(addr common.Address) bool {
+	return pool.isSigner != nil && pool.isSigner(addr)
+}
+
+func (pool *TxPool) IsNotSigner(addr common.Address) bool {
+	return pool.isSigner != nil && !pool.isSigner(addr)
+}
+
 // addressByHeartbeat is an account address tagged with its last activity timestamp.
 type addressByHeartbeat struct {
 	address   common.Address
diff --git a/eth/backend.go b/eth/backend.go
index ebe31ec139..add16777d9 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -302,7 +302,7 @@ func New(stack *node.Node, config *ethconfig.Config, XDCXServ *XDCx.XDCX, lendin
 				log.Error("Cannot get etherbase for append m2 header", "err", err)
 				return fmt.Errorf("etherbase missing: %v", err)
 			}
-			ok := eth.txPool.IsSigner != nil && eth.txPool.IsSigner(eb)
+			ok := eth.txPool.IsSigner(eb)
 			if !ok {
 				return nil
 			}
@@ -355,9 +355,10 @@ func New(stack *node.Node, config *ethconfig.Config, XDCXServ *XDCx.XDCX, lendin
 		hooks.AttachConsensusV1Hooks(c, eth.blockchain, chainConfig)
 		hooks.AttachConsensusV2Hooks(c, eth.blockchain, chainConfig)
 
-		eth.txPool.IsSigner = func(address common.Address) bool {
+		isSigner := func(address common.Address) bool {
 			return c.IsAuthorisedAddress(eth.blockchain, eth.blockchain.CurrentHeader(), address)
 		}
+		eth.txPool.SetSigner(isSigner)
 	}
 	// Start the RPC service
 	eth.netRPCService = ethapi.NewNetAPI(eth.p2pServer, eth.NetVersion())