diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/TraceCallMany.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/TraceCallMany.java
index e3dfb245bb8..4ee9ff04e33 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/TraceCallMany.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/TraceCallMany.java
@@ -64,7 +64,7 @@ public String getName() {
   @Override
   protected BlockParameter blockParameter(final JsonRpcRequestContext request) {
     final Optional<BlockParameter> maybeBlockParameter =
-        request.getOptionalParameter(2, BlockParameter.class);
+        request.getOptionalParameter(1, BlockParameter.class);
 
     if (maybeBlockParameter.isPresent()) {
       return maybeBlockParameter.get();