diff --git a/core/types/transaction_marshalling.go b/core/types/transaction_marshalling.go
index 0c3529c74..d7f43b193 100644
--- a/core/types/transaction_marshalling.go
+++ b/core/types/transaction_marshalling.go
@@ -63,8 +63,8 @@ type txJSON struct {
 	QueueIndex *hexutil.Uint64 `json:"queueIndex,omitempty"`
 
 	// Alt fee transaction fields:
-	FeeTokenID hexutil.Uint16 `json:"fee_token_id"`
-	FeeLimit   *hexutil.Big   `json:"fee_limit"`
+	FeeTokenID hexutil.Uint16 `json:"feeTokenID"`
+	FeeLimit   *hexutil.Big   `json:"feeLimit"`
 }
 
 // yParityValue returns the YParity value from JSON. For backwards-compatibility reasons,
diff --git a/tests/state_test_util.go b/tests/state_test_util.go
index 9eff906ff..75cd62b24 100644
--- a/tests/state_test_util.go
+++ b/tests/state_test_util.go
@@ -113,8 +113,8 @@ type stTransaction struct {
 	Value                []string            `json:"value"`
 	PrivateKey           []byte              `json:"secretKey"`
 
-	FeeTokenID uint16   `json:"fee_token_id,omitempty"`
-	FeeLimit   *big.Int `json:"fee_limit,omitempty"`
+	FeeTokenID uint16   `json:"feeTokenID,omitempty"`
+	FeeLimit   *big.Int `json:"feeLimit,omitempty"`
 }
 
 type stTransactionMarshaling struct {