diff --git a/consensus/misc/basefee.go b/consensus/misc/basefee.go
index 585896d1d..a7383ca76 100644
--- a/consensus/misc/basefee.go
+++ b/consensus/misc/basefee.go
@@ -89,7 +89,7 @@ func CalcBaseFee(config *params.ChainConfig, parent *types.Header) *big.Int {
 		delta.Mul(parentBaseFee, gasDelta)
 		delta.Div(delta, parentGasTarget)
 		delta.Div(delta, feeDenominator)
-		feeDelta := math.BigMax(parentBaseFee, big.NewInt(1))
+		feeDelta := math.BigMax(delta, big.NewInt(1))
 		return new(big.Int).Add(parentBaseFee, feeDelta)
 	}