From 7ddf21209181f902d2eb3f16d079ba46426127d8 Mon Sep 17 00:00:00 2001
From: julian <julian@cypherstack.com>
Date: Wed, 8 Nov 2023 15:49:28 -0600
Subject: [PATCH] fix address generation index bug

---
 lib/wallets/wallet/intermediate/bip39_hd_wallet.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/wallets/wallet/intermediate/bip39_hd_wallet.dart b/lib/wallets/wallet/intermediate/bip39_hd_wallet.dart
index a176f4d9e..eb01d996e 100644
--- a/lib/wallets/wallet/intermediate/bip39_hd_wallet.dart
+++ b/lib/wallets/wallet/intermediate/bip39_hd_wallet.dart
@@ -27,7 +27,7 @@ abstract class Bip39HDWallet<T extends Bip39HDCurrency> extends Bip39Wallet<T>
   @override
   Future<void> generateNewReceivingAddress() async {
     final current = await getCurrentReceivingAddress();
-    final index = current?.derivationIndex ?? 0;
+    final index = current == null ? 0 : current.derivationIndex + 1;
     const chain = 0; // receiving address
 
     final address = await _generateAddress(
@@ -49,7 +49,7 @@ abstract class Bip39HDWallet<T extends Bip39HDCurrency> extends Bip39Wallet<T>
   @override
   Future<void> generateNewChangeAddress() async {
     final current = await getCurrentChangeAddress();
-    final index = current?.derivationIndex ?? 0;
+    final index = current == null ? 0 : current.derivationIndex + 1;
     const chain = 1; // change address
 
     final address = await _generateAddress(