1 files changed, 3 insertions, 1 deletions
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 6c54c72e76..7446a4889a 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -867,8 +867,10 @@ public:
     std::vector<std::string> GetDestValues(const std::string& prefix) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
     //! Holds a timestamp at which point the wallet is scheduled (externally) to be relocked. Caller must arrange for actual relocking to occur via Lock().
-    int64_t nRelockTime = 0;
+    int64_t nRelockTime GUARDED_BY(cs_wallet){0};
 
+    // Used to prevent concurrent calls to walletpassphrase RPC.
+    Mutex m_unlock_mutex;
     bool Unlock(const SecureString& strWalletPassphrase, bool accept_no_keys = false);
     bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase);
     bool EncryptWallet(const SecureString& strWalletPassphrase);