diff --git a/core/types/dynamic_fee_tx.go b/core/types/dynamic_fee_tx.go
index 4b040e7e867..08d15f94b42 100644
--- a/core/types/dynamic_fee_tx.go
+++ b/core/types/dynamic_fee_tx.go
@@ -49,7 +49,7 @@ func (tx DynamicFeeTransaction) GetEffectiveGasTip(baseFee *uint256.Int) *uint25
 	if gasFeeCap.Lt(baseFee) {
 		return uint256.NewInt(0)
 	}
-	effectiveFee := gasFeeCap.Sub(gasFeeCap, baseFee)
+	effectiveFee := new(uint256.Int).Sub(gasFeeCap, baseFee)
 	if tx.GetTip().Lt(effectiveFee) {
 		return tx.GetTip()
 	} else {
diff --git a/core/types/legacy_tx.go b/core/types/legacy_tx.go
index 9cb478fe06e..36f8566d815 100644
--- a/core/types/legacy_tx.go
+++ b/core/types/legacy_tx.go
@@ -77,7 +77,7 @@ func (tx LegacyTx) GetEffectiveGasTip(baseFee *uint256.Int) *uint256.Int {
 	if gasFeeCap.Lt(baseFee) {
 		return uint256.NewInt(0)
 	}
-	effectiveFee := gasFeeCap.Sub(gasFeeCap, baseFee)
+	effectiveFee := new(uint256.Int).Sub(gasFeeCap, baseFee)
 	if tx.GetTip().Lt(effectiveFee) {
 		return tx.GetTip()
 	} else {
diff --git a/eth/gasprice/gasprice.go b/eth/gasprice/gasprice.go
index e102297e98a..f673d8f150e 100644
--- a/eth/gasprice/gasprice.go
+++ b/eth/gasprice/gasprice.go
@@ -152,6 +152,9 @@ func (gpo *Oracle) SuggestPrice(ctx context.Context) (*big.Int, error) {
 	if price.Cmp(gpo.maxPrice) > 0 {
 		price = new(big.Int).Set(gpo.maxPrice)
 	}
+	if head.BaseFee != nil {
+		price.Add(price, head.BaseFee)
+	}
 	gpo.cacheLock.Lock()
 	gpo.lastHead = headHash
 	gpo.lastPrice = price