diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index b94358451f..647c860bdc 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -59,9 +59,11 @@ OptionsDialog::OptionsDialog(QWidget *parent, bool enableWallet) :
 
     connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyIp, SLOT(setEnabled(bool)));
     connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyPort, SLOT(setEnabled(bool)));
+    connect(ui->connectSocks, SIGNAL(toggled(bool)), this, SLOT(updateProxyValidationState()));
 
     connect(ui->connectSocksTor, SIGNAL(toggled(bool)), ui->proxyIpTor, SLOT(setEnabled(bool)));
     connect(ui->connectSocksTor, SIGNAL(toggled(bool)), ui->proxyPortTor, SLOT(setEnabled(bool)));
+    connect(ui->connectSocksTor, SIGNAL(toggled(bool)), this, SLOT(updateProxyValidationState()));
 
     /* Window elements init */
 #ifdef Q_OS_MAC
@@ -117,8 +119,10 @@ OptionsDialog::OptionsDialog(QWidget *parent, bool enableWallet) :
     /* setup/change UI elements when proxy IPs are invalid/valid */
     ui->proxyIp->setCheckValidator(new ProxyAddressValidator(parent));
     ui->proxyIpTor->setCheckValidator(new ProxyAddressValidator(parent));
-    connect(ui->proxyIp, SIGNAL(validationDidChange(QValidatedLineEdit *)), this, SLOT(updateProxyValidationState(QValidatedLineEdit *)));
-    connect(ui->proxyIpTor, SIGNAL(validationDidChange(QValidatedLineEdit *)), this, SLOT(updateProxyValidationState(QValidatedLineEdit *)));
+    connect(ui->proxyIp, SIGNAL(validationDidChange(QValidatedLineEdit *)), this, SLOT(updateProxyValidationState()));
+    connect(ui->proxyIpTor, SIGNAL(validationDidChange(QValidatedLineEdit *)), this, SLOT(updateProxyValidationState()));
+    connect(ui->proxyPort, SIGNAL(textChanged(const QString&)), this, SLOT(updateProxyValidationState()));
+    connect(ui->proxyPortTor, SIGNAL(textChanged(const QString&)), this, SLOT(updateProxyValidationState()));
 }
 
 OptionsDialog::~OptionsDialog()
@@ -256,10 +260,11 @@ void OptionsDialog::clearStatusLabel()
     ui->statusLabel->clear();
 }
 
-void OptionsDialog::updateProxyValidationState(QValidatedLineEdit *pUiProxyIp)
+void OptionsDialog::updateProxyValidationState()
 {
+    QValidatedLineEdit *pUiProxyIp = ui->proxyIp;
     QValidatedLineEdit *otherProxyWidget = (pUiProxyIp == ui->proxyIpTor) ? ui->proxyIp : ui->proxyIpTor;
-    if (pUiProxyIp->isValid())
+    if (pUiProxyIp->isValid() && (!ui->proxyPort->isEnabled() || ui->proxyPort->text().toInt() > 0) && (!ui->proxyPortTor->isEnabled() || ui->proxyPortTor->text().toInt() > 0))
     {
         setOkButtonState(otherProxyWidget->isValid()); //only enable ok button if both proxys are valid
         ui->statusLabel->clear();
diff --git a/src/qt/optionsdialog.h b/src/qt/optionsdialog.h
index 7d6ca60c80..489e35da49 100644
--- a/src/qt/optionsdialog.h
+++ b/src/qt/optionsdialog.h
@@ -52,7 +52,7 @@ private Q_SLOTS:
 
     void showRestartWarning(bool fPersistent = false);
     void clearStatusLabel();
-    void updateProxyValidationState(QValidatedLineEdit *pUiProxyIp);
+    void updateProxyValidationState();
     /* query the networks, for which the default proxy is used */
     void updateDefaultProxyNets();