diff --git a/main/accounts/Account/index.js b/main/accounts/Account/index.js
index 226b013c9..eeee16c9a 100644
--- a/main/accounts/Account/index.js
+++ b/main/accounts/Account/index.js
@@ -218,7 +218,7 @@ class Account {
         signers.get(this.signer.id).signTransaction(this.index, rawTx, cb)
       } else if (this.smart) {
         if (this.smart.actor && this.smart.actor.account && this.smart.actor.account.signer) {
-          signers.get(this.smart.actor.account.id).signTransaction(this.index, rawTx, cb)
+          signers.get(this.smart.actor.account.id).signTransaction(this.smart.actor.index, rawTx, cb)
         } else {
           cb(new Error(`Agent's (${this.smart.agent}) signer is not ready`))
         }