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-rw-r--r--src/qt/paymentserver.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
index ba5c06064f..cfa87c16ba 100644
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -548,6 +548,7 @@ void PaymentServer::fetchPaymentACK(CWallet* wallet, SendCoinsRecipient recipien
else {
CPubKey newKey;
if (wallet->GetKeyFromPool(newKey)) {
+ LOCK(wallet->cs_wallet); // SetAddressBook
CKeyID keyID = newKey.GetID();
wallet->SetAddressBook(keyID, strAccount, "refund");