diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index b668a60f1f5c9..057a86add841d 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1249,7 +1249,7 @@ bool CWallet::AbandonTransaction(const uint256& hashTx)
 
 void CWallet::MarkConflicted(const uint256& hashBlock, const uint256& hashTx)
 {
-    LOCK2(cs_main, cs_wallet);
+    LOCK2(cs_main, cs_wallet); // check "LOCK2(cs_main, pwallet->cs_wallet);" in CWalletDB::LoadWallet()
 
     int conflictconfirms = 0;
     if (mapBlockIndex.count(hashBlock)) {
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 3714a51f7748d..645c8b21e6413 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -586,7 +586,7 @@ DBErrors CWalletDB::LoadWallet(CWallet* pwallet)
     bool fNoncriticalErrors = false;
     DBErrors result = DB_LOAD_OK;
 
-    LOCK(pwallet->cs_wallet);
+    LOCK2(cs_main, pwallet->cs_wallet);
     try {
         int nMinVersion = 0;
         if (Read((std::string)"minversion", nMinVersion))