diff --git a/core/gen_genesis.go b/core/gen_genesis.go
index f5a3f5b4be78..4e0844e889ab 100644
--- a/core/gen_genesis.go
+++ b/core/gen_genesis.go
@@ -30,7 +30,7 @@ func (g Genesis) MarshalJSON() ([]byte, error) {
 		Number     math.HexOrDecimal64                         `json:"number"`
 		GasUsed    math.HexOrDecimal64                         `json:"gasUsed"`
 		ParentHash common.Hash                                 `json:"parentHash"`
-		BaseFee    *math.HexOrDecimal256                       `json:"baseFee"`
+		BaseFee    *math.HexOrDecimal256                       `json:"baseFeePerGas"`
 	}
 	var enc Genesis
 	enc.Config = g.Config
@@ -69,7 +69,7 @@ func (g *Genesis) UnmarshalJSON(input []byte) error {
 		Number     *math.HexOrDecimal64                        `json:"number"`
 		GasUsed    *math.HexOrDecimal64                        `json:"gasUsed"`
 		ParentHash *common.Hash                                `json:"parentHash"`
-		BaseFee    *math.HexOrDecimal256                       `json:"baseFee"`
+		BaseFee    *math.HexOrDecimal256                       `json:"baseFeePerGas"`
 	}
 	var dec Genesis
 	if err := json.Unmarshal(input, &dec); err != nil {
diff --git a/core/genesis.go b/core/genesis.go
index f478df4230c6..cf421ca257d8 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -62,7 +62,7 @@ type Genesis struct {
 	Number     uint64      `json:"number"`
 	GasUsed    uint64      `json:"gasUsed"`
 	ParentHash common.Hash `json:"parentHash"`
-	BaseFee    *big.Int    `json:"baseFee"`
+	BaseFee    *big.Int    `json:"baseFeePerGas"`
 }
 
 // GenesisAlloc specifies the initial state that is part of the genesis block.