diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index b0e1ecedac..ae772612f9 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -1206,7 +1206,7 @@ func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr r
 
 // EstimateGas returns an estimate of the amount of gas needed to execute the
 // given transaction against the current pending block.
-func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (hexutil.Uint64, error) {
+func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs, blockNrOrHash *rpc.BlockNumberOrHash) (hexutil.Uint64, error) {
 	// Binary search the gas requirement, as it may be higher than the amount used
 	var (
 		lo  uint64 = params.TxGas - 1