diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index 1005a85d..ce40e1fc 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -1833,7 +1833,7 @@ RPC.prototype.signRawTransaction = async function signRawTransaction(args, help)
     for (const prev of prevout) {
       const valid = new Validator([prev]);
       const hash = valid.hash('txid');
-      const index = valid.u32('index');
+      const index = valid.u32('vout');
       const scriptRaw = valid.buf('scriptPubKey');
       const value = valid.ufixed('amount', 8);
       const redeemRaw = valid.buf('redeemScript');