diff --git a/ethclient/simulated/backend.go b/ethclient/simulated/backend.go
index aeec973647..170004c36c 100644
--- a/ethclient/simulated/backend.go
+++ b/ethclient/simulated/backend.go
@@ -56,7 +56,8 @@ type Client interface {
 	ethereum.ContractCaller
 	ethereum.GasEstimator
 	ethereum.GasPricer
-	ethereum.GasPricer1559
+	ethereum.GasTipCapReader
+	ethereum.FeeHistoryReader
 	ethereum.LogFilterer
 	ethereum.PendingStateReader
 	ethereum.PendingContractCaller
diff --git a/interfaces.go b/interfaces.go
index 59ee47e010..0cc402ffd0 100644
--- a/interfaces.go
+++ b/interfaces.go
@@ -199,9 +199,13 @@ type GasPricer interface {
 	SuggestGasPrice(ctx context.Context) (*big.Int, error)
 }
 
-// GasPricer1559 provides access to the EIP-1559 gas price oracle.
-type GasPricer1559 interface {
+// GasTipCapReader provides access to the EIP-1559 gas price oracle.
+type GasTipCapReader interface {
 	SuggestGasTipCap(ctx context.Context) (*big.Int, error)
+}
+
+// FeeHistoryReader provides access to the fee history oracle.
+type FeeHistoryReader interface {
 	FeeHistory(ctx context.Context, blockCount uint64, lastBlock *big.Int, rewardPercentiles []float64) (*FeeHistory, error)
 }