diff --git a/src/CryptoNoteWrapper/WalletGreenWorker.cpp b/src/CryptoNoteWrapper/WalletGreenWorker.cpp
index 5c1da4a..eeff391 100644
--- a/src/CryptoNoteWrapper/WalletGreenWorker.cpp
+++ b/src/CryptoNoteWrapper/WalletGreenWorker.cpp
@@ -44,6 +44,8 @@
 #include "Wallet/WalletGreen.h"
 #include "Wallet/WalletErrors.h"
 
+using namespace Qwertycoin;
+
 namespace WalletGui {
 
 namespace {
@@ -256,7 +258,7 @@ IWalletAdapter::WalletInitStatus WalletGreenWorker::createWithKeys(const QString
     int errorCode = 0;
     try {
       m_wallet->initializeWithViewKey(std::string(_walletPath.toLocal8Bit().data()), "", _accountKeys.viewKeys.secretKey);
-      if (std::memcmp(&_accountKeys.spendKeys.secretKey, &CryptoNote::NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0) {
+      if (std::memcmp(&_accountKeys.spendKeys.secretKey, &NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0) {
         m_wallet->createAddress(_accountKeys.spendKeys.publicKey);
       } else {
         m_wallet->createAddress(_accountKeys.spendKeys.secretKey);
@@ -295,7 +297,7 @@ IWalletAdapter::WalletInitStatus WalletGreenWorker::createWithKeysAndTimestamp(c
     int errorCode = 0;
     try {
       m_wallet->initializeWithViewKeyAndTimestamp(std::string(_walletPath.toLocal8Bit().data()), "", _accountKeys.viewKeys.secretKey, _creationTimestamp);
-      if (std::memcmp(&_accountKeys.spendKeys.secretKey, &CryptoNote::NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0) {
+      if (std::memcmp(&_accountKeys.spendKeys.secretKey, &NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0) {
         m_wallet->createAddress(_accountKeys.spendKeys.publicKey);
       } else {
         m_wallet->createAddressWithTimestamp(_accountKeys.spendKeys.secretKey, _creationTimestamp);
@@ -597,12 +599,12 @@ Crypto::SecretKey WalletGreenWorker::getTransactionSecretKey(quintptr _transacti
       if (_transaction.secretKey) {
         txKey = _transaction.secretKey.get();
       } else {
-        txKey = CryptoNote::NULL_SECRET_KEY;
+        txKey = NULL_SECRET_KEY;
       }
       // txKey = _transaction.secretKey;
     } catch (const std::exception& _error) {
       WalletLogger::critical(tr("[Wallet] Get transaction key error: %1").arg(_error.what()));
-      txKey = CryptoNote::NULL_SECRET_KEY;
+      txKey = NULL_SECRET_KEY;
     }
   });
 
@@ -710,7 +712,7 @@ IWalletAdapter::SendTransactionStatus WalletGreenWorker::sendTransaction(const C
   SemaphoreLocker locker(m_walletSemaphore);
   int errorCode = 0;
   quintptr newTransactionId = CryptoNote::WALLET_INVALID_TRANSACTION_ID;
-  Crypto::SecretKey newTransactionKey = CryptoNote::NULL_SECRET_KEY;
+  Crypto::SecretKey newTransactionKey = NULL_SECRET_KEY;
   WalletLogger::debug(tr("[Wallet] Sending transaction..."));
   m_dispatcher->remoteSpawn([this, &_transactionParameters, &errorCode, &newTransactionId, &newTransactionKey]() {
     SemaphoreUnlocker unlocker(m_walletSemaphore);
@@ -790,7 +792,7 @@ QString WalletGreenWorker::getBalanceProof(quint64& _amount, QString& _message)
 
   Crypto::SecretKey viewSecretKey = accountKeys.viewKeys.secretKey;
 
-  if (accountKeys.spendKeys.secretKey == CryptoNote::NULL_SECRET_KEY) {
+  if (accountKeys.spendKeys.secretKey == NULL_SECRET_KEY) {
     throw std::runtime_error("Reserve proof can only be generated by a full wallet");
   }
 
diff --git a/src/Gui/Common/KeyDialog.cpp b/src/Gui/Common/KeyDialog.cpp
index 6df4b59..5c27a15 100644
--- a/src/Gui/Common/KeyDialog.cpp
+++ b/src/Gui/Common/KeyDialog.cpp
@@ -29,6 +29,8 @@
 #include "Style/Style.h"
 #include "ui_KeyDialog.h"
 
+using namespace Qwertycoin;
+
 namespace WalletGui {
 
 namespace {
@@ -60,7 +62,7 @@ bool isTrackingKeys(const QByteArray& _array) {
   }
 
   AccountKeys accountKeys = convertByteArrayToAccountKeys(_array);
-  return (std::memcmp(&accountKeys.spendKeys.secretKey, &CryptoNote::NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0);
+  return (std::memcmp(&accountKeys.spendKeys.secretKey, &NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0);
 }
 
 }
@@ -216,7 +218,7 @@ void KeyDialog::keyChanged() {
     accountKeys = convertByteArrayToAccountKeys(_array);
   }
 
-  m_isTracking = (std::memcmp(&accountKeys.spendKeys.secretKey, &CryptoNote::NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0);
+  m_isTracking = (std::memcmp(&accountKeys.spendKeys.secretKey, &NULL_SECRET_KEY, sizeof(Crypto::SecretKey)) == 0);
 
   setWindowTitle(m_isTracking ? tr("Import tracking key") : tr("Import key"));
   if (m_isTracking) {
diff --git a/src/Gui/Common/TransactionDetailsDialog.cpp b/src/Gui/Common/TransactionDetailsDialog.cpp
index 15fab9c..e653ce6 100644
--- a/src/Gui/Common/TransactionDetailsDialog.cpp
+++ b/src/Gui/Common/TransactionDetailsDialog.cpp
@@ -38,6 +38,8 @@
 
 Q_DECLARE_METATYPE(QList<CryptoNote::WalletTransfer>)
 
+using namespace Qwertycoin;
+
 namespace WalletGui {
 
 namespace {
@@ -164,7 +166,7 @@ TransactionDetailsDialog::TransactionDetailsDialog(ICryptoNoteAdapter* _cryptoNo
 
   Crypto::SecretKey tx_key = m_cryptoNoteAdapter->getNodeAdapter()->getWalletAdapter()->getTransactionSecretKey(static_cast<size_t>(m_index.row()));
   QString transactionKey;
-  if (tx_key != CryptoNote::NULL_SECRET_KEY) {
+  if (tx_key != NULL_SECRET_KEY) {
     transactionKey = QString::fromStdString(Common::podToHex(tx_key));
   } else {
     transactionKey = QString("(n/a)");
@@ -211,7 +213,7 @@ QString TransactionDetailsDialog::getTxProof(const QModelIndex& _index) const {
   Crypto::SecretKey txKey = m_cryptoNoteAdapter->getNodeAdapter()->getWalletAdapter()->getTransactionSecretKey(static_cast<size_t>(m_index.row()));
   QString address_str = QString::fromStdString(transfer.address);
   CryptoNote::AccountPublicAddress addr;
-  if (m_cryptoNoteAdapter->parseAccountAddressString(address_str, addr) && transfer.amount > 0 && txKey != CryptoNote::NULL_SECRET_KEY) {
+  if (m_cryptoNoteAdapter->parseAccountAddressString(address_str, addr) && transfer.amount > 0 && txKey != NULL_SECRET_KEY) {
     proof = m_cryptoNoteAdapter->getTxProof(txHash, addr, txKey);
   }
   return proof;
diff --git a/src/Models/TransfersModel.cpp b/src/Models/TransfersModel.cpp
index 18466d0..d45de43 100644
--- a/src/Models/TransfersModel.cpp
+++ b/src/Models/TransfersModel.cpp
@@ -33,6 +33,8 @@
 
 Q_DECLARE_METATYPE(QList<CryptoNote::WalletTransfer>)
 
+using namespace Qwertycoin;
+
 namespace WalletGui {
 
 namespace {
@@ -153,7 +155,7 @@ QVariant TransfersModel::getDecorationRole(const QModelIndex& _index) const {
     Crypto::SecretKey txKey = m_cryptoNoteAdapter->getNodeAdapter()->getWalletAdapter()->getTransactionSecretKey(static_cast<size_t>(m_transactionIndex.row()));
     QString address_str = QString::fromStdString(transfer.address);
     CryptoNote::AccountPublicAddress addr;
-    if (m_cryptoNoteAdapter->parseAccountAddressString(address_str, addr) && transfer.amount > 0 && txKey != CryptoNote::NULL_SECRET_KEY) {
+    if (m_cryptoNoteAdapter->parseAccountAddressString(address_str, addr) && transfer.amount > 0 && txKey != NULL_SECRET_KEY) {
       painter.drawPixmap(7,12, icon.width(), icon.height(), icon);
     }
     return pixmap;