diff --git a/core/txpool/errors.go b/core/txpool/errors.go
index 2607709d30..3a6a913976 100644
--- a/core/txpool/errors.go
+++ b/core/txpool/errors.go
@@ -38,10 +38,6 @@ var (
 	// allowed by a pool for a single account.
 	ErrAccountLimitExceeded = errors.New("account limit exceeded")
 
-	// ErrInflightTxLimitReached is returned when the maximum number of in-flight
-	// transactions is reached for specific accounts.
-	ErrInflightTxLimitReached = errors.New("in-flight transaction limit reached for delegated accounts")
-
 	// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
 	// maximum allowance of the current block.
 	ErrGasLimit = errors.New("exceeds block gas limit")
@@ -64,9 +60,4 @@ var (
 	// input transaction of non-blob type when a blob transaction from this sender
 	// remains pending (and vice-versa).
 	ErrAlreadyReserved = errors.New("address already reserved")
-
-	// ErrAuthorityReserved is returned if a transaction has an authorization
-	// signed by an address which already has in-flight transactions known to the
-	// pool.
-	ErrAuthorityReserved = errors.New("authority already reserved")
 )
diff --git a/core/txpool/legacypool/legacypool.go b/core/txpool/legacypool/legacypool.go
index ada3f1380c..12c4f9d141 100644
--- a/core/txpool/legacypool/legacypool.go
+++ b/core/txpool/legacypool/legacypool.go
@@ -61,6 +61,15 @@ var (
 	// ErrTxPoolOverflow is returned if the transaction pool is full and can't accept
 	// another remote transaction.
 	ErrTxPoolOverflow = errors.New("txpool is full")
+
+	// ErrInflightTxLimitReached is returned when the maximum number of in-flight
+	// transactions is reached for specific accounts.
+	ErrInflightTxLimitReached = errors.New("in-flight transaction limit reached for delegated accounts")
+
+	// ErrAuthorityReserved is returned if a transaction has an authorization
+	// signed by an address which already has in-flight transactions known to the
+	// pool.
+	ErrAuthorityReserved = errors.New("authority already reserved")
 )
 
 var (
@@ -631,14 +640,14 @@ func (pool *LegacyPool) validateAuth(tx *types.Transaction) error {
 		// Replace the existing inflight transaction for delegated accounts
 		// are still supported
 		if count >= 1 && !exists {
-			return txpool.ErrInflightTxLimitReached
+			return ErrInflightTxLimitReached
 		}
 	}
 	// Authorities cannot conflict with any pending or queued transactions.
 	if auths := tx.SetCodeAuthorities(); len(auths) > 0 {
 		for _, auth := range auths {
 			if pool.pending[auth] != nil || pool.queue[auth] != nil {
-				return txpool.ErrAuthorityReserved
+				return ErrAuthorityReserved
 			}
 		}
 	}
diff --git a/core/txpool/legacypool/legacypool_test.go b/core/txpool/legacypool/legacypool_test.go
index 81e45055f7..4831c0f7cb 100644
--- a/core/txpool/legacypool/legacypool_test.go
+++ b/core/txpool/legacypool/legacypool_test.go
@@ -2248,12 +2248,12 @@ func TestSetCodeTransactions(t *testing.T) {
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1), keyA)); err != nil {
 					t.Fatalf("%s: failed to add remote transaction: %v", name, err)
 				}
-				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
+				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyA)); !errors.Is(err, ErrInflightTxLimitReached) {
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, ErrInflightTxLimitReached, err)
 				}
 				// Also check gapped transaction.
-				if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
+				if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(1), keyA)); !errors.Is(err, ErrInflightTxLimitReached) {
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, ErrInflightTxLimitReached, err)
 				}
 				// Replace by fee.
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(10), keyA)); err != nil {
@@ -2287,8 +2287,8 @@ func TestSetCodeTransactions(t *testing.T) {
 					t.Fatalf("%s: failed to add with pending delegatio: %v", name, err)
 				}
 				// Also check gapped transaction is rejected.
-				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyC)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
+				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyC)); !errors.Is(err, ErrInflightTxLimitReached) {
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, ErrInflightTxLimitReached, err)
 				}
 			},
 		},
@@ -2363,7 +2363,7 @@ func TestSetCodeTransactions(t *testing.T) {
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1000), keyC)); err != nil {
 					t.Fatalf("%s: failed to added single pooled for account with pending delegation: %v", name, err)
 				}
-				if err, want := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1000), keyC)), txpool.ErrInflightTxLimitReached; !errors.Is(err, want) {
+				if err, want := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1000), keyC)), ErrInflightTxLimitReached; !errors.Is(err, want) {
 					t.Fatalf("%s: error mismatch: want %v, have %v", name, want, err)
 				}
 			},
@@ -2376,7 +2376,7 @@ func TestSetCodeTransactions(t *testing.T) {
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1000), keyC)); err != nil {
 					t.Fatalf("%s: failed to add with remote setcode transaction: %v", name, err)
 				}
-				if err, want := pool.addRemoteSync(setCodeTx(0, keyA, []unsignedAuth{{1, keyC}})), txpool.ErrAuthorityReserved; !errors.Is(err, want) {
+				if err, want := pool.addRemoteSync(setCodeTx(0, keyA, []unsignedAuth{{1, keyC}})), ErrAuthorityReserved; !errors.Is(err, want) {
 					t.Fatalf("%s: error mismatch: want %v, have %v", name, want, err)
 				}
 			},