diff --git a/src/crypter.h b/src/crypter.h
index 6b610fbe5e402..39d7c6d29fe62 100644
--- a/src/crypter.h
+++ b/src/crypter.h
@@ -13,6 +13,8 @@
 
 class uint256;
 
+#include <atomic>
+
 const unsigned int WALLET_CRYPTO_KEY_SIZE = 32;
 const unsigned int WALLET_CRYPTO_SALT_SIZE = 8;
 const unsigned int WALLET_CRYPTO_IV_SIZE = 16;
@@ -126,7 +128,7 @@ class CCryptoKeyStore : public CBasicKeyStore
 private:
     //! if fUseCrypto is true, mapKeys and mapSaplingSpendingKeys must be empty
     //! if fUseCrypto is false, vMasterKey must be empty
-    bool fUseCrypto;
+    std::atomic<bool> fUseCrypto;
 
 protected:
     // TODO: In the future, move this variable to the wallet class directly following upstream's structure.