diff --git a/eth/catalyst/simulated_beacon.go b/eth/catalyst/simulated_beacon.go
index 3a45cd65d9..291f91874c 100644
--- a/eth/catalyst/simulated_beacon.go
+++ b/eth/catalyst/simulated_beacon.go
@@ -144,9 +144,9 @@ func (c *SimulatedBeacon) Stop() error {
 
 // sealBlock initiates payload building for a new block and creates a new block
 // with the completed payload.
-func (c *SimulatedBeacon) sealBlock(withdrawals []*types.Withdrawal, tstamp uint64) error {
-	if tstamp <= c.lastBlockTime {
-		tstamp = c.lastBlockTime + 1
+func (c *SimulatedBeacon) sealBlock(withdrawals []*types.Withdrawal, timestamp uint64) error {
+	if timestamp <= c.lastBlockTime {
+		timestamp = c.lastBlockTime + 1
 	}
 	c.feeRecipientLock.Lock()
 	feeRecipient := c.feeRecipient
@@ -161,7 +161,7 @@ func (c *SimulatedBeacon) sealBlock(withdrawals []*types.Withdrawal, tstamp uint
 	var random [32]byte
 	rand.Read(random[:])
 	fcResponse, err := c.engineAPI.ForkchoiceUpdatedV2(c.curForkchoiceState, &engine.PayloadAttributes{
-		Timestamp:             tstamp,
+		Timestamp:             timestamp,
 		SuggestedFeeRecipient: feeRecipient,
 		Withdrawals:           withdrawals,
 		Random:                random,
diff --git a/ethclient/simulated/backend.go b/ethclient/simulated/backend.go
index 8cfb7992f3..68b69c0aad 100644
--- a/ethclient/simulated/backend.go
+++ b/ethclient/simulated/backend.go
@@ -178,7 +178,7 @@ func (n *Backend) Fork(parentHash common.Hash) error {
 	return n.beacon.Fork(parentHash)
 }
 
-// AdjustTime changes the block timestamp.
+// AdjustTime changes the block timestamp and creates a new block.
 // It can only be called on empty blocks.
 func (n *Backend) AdjustTime(adjustment time.Duration) error {
 	return n.beacon.AdjustTime(adjustment)