diff --git a/sequencer/sequencer.go b/sequencer/sequencer.go
index b6ce44661e..dcabff3aa8 100644
--- a/sequencer/sequencer.go
+++ b/sequencer/sequencer.go
@@ -231,7 +231,8 @@ func (s *Sequencer) addTxToWorker(ctx context.Context, tx pool.Transaction) erro
 		_, l2gp := s.pool.GetL1AndL2GasPrice()
 		defaultGp := new(big.Int).SetUint64(l2gp)
 		baseGp := s.worker.getBaseClaimGp(defaultGp)
-		txTracker.GasPrice = baseGp.Mul(baseGp, new(big.Int).SetUint64(uint64(getGasPriceMultiple(s.cfg.GasPriceMultiple))))
+		copyBaseGp := new(big.Int).Set(baseGp)
+		txTracker.GasPrice = copyBaseGp.Mul(copyBaseGp, new(big.Int).SetUint64(uint64(getGasPriceMultiple(s.cfg.GasPriceMultiple))))
 	}
 
 	replacedTx, dropReason := s.worker.AddTxTracker(ctx, txTracker)
diff --git a/sequencer/txsorted_list.go b/sequencer/txsorted_list.go
index c1de2e2147..2ee3e5b3f7 100644
--- a/sequencer/txsorted_list.go
+++ b/sequencer/txsorted_list.go
@@ -58,7 +58,8 @@ func (e *txSortedList) delete(tx *TxTracker) bool {
 
 			if (e.sorted[i].GasPrice.Cmp(tx.GasPrice)) != 0 {
 				// we have a tx with different (lower) GasPrice than the tx we are looking for, therefore we haven't found the tx
-				log.Warnf("error deleting tx %s from txSortedList, not found in the list of txs with same gasPrice: %s", tx.HashStr)
+				log.Warnf("error deleting tx %s from txSortedList %s, not found in the list of txs with same gasPrice: %s - %s",
+					tx.HashStr, e.sorted[i].HashStr, tx.GasPrice.String(), e.sorted[i].GasPrice.String())
 				return false
 			}
 
diff --git a/sequencer/worker.go b/sequencer/worker.go
index ad65b25c82..9b502b09fb 100644
--- a/sequencer/worker.go
+++ b/sequencer/worker.go
@@ -33,6 +33,7 @@ func NewWorker(state stateInterface, constraints state.BatchConstraintsCfg, read
 		state:            state,
 		batchConstraints: constraints,
 		readyTxsCond:     readyTxsCond,
+		claimGp:          new(big.Int),
 	}
 
 	return &w