diff --git a/src/src/PACS/Widget/pacsconfiguration.cpp b/src/src/PACS/Widget/pacsconfiguration.cpp
index d05f6ea..309b925 100644
--- a/src/src/PACS/Widget/pacsconfiguration.cpp
+++ b/src/src/PACS/Widget/pacsconfiguration.cpp
@@ -74,17 +74,30 @@ void ConfigurationDialog::initUi()
 	m_pTitleBar->setFixedHeight(30);
 	m_pMainLayout->addWidget(m_pTitleBar);
 
+	//validators for line editor
+    QRegularExpression portRegex("^(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0)$");
+    QRegularExpressionValidator * portValidator = new QRegularExpressionValidator(this);
+	portValidator->setRegularExpression(portRegex);
+    QRegularExpression ipRegex("^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$");
+	QRegularExpressionValidator * ipValidator = new QRegularExpressionValidator(this);
+	ipValidator->setRegularExpression(ipRegex);
+	QRegularExpression aeTitleRegex("^[0-9a-zA-Z_-]{1,16}$");
+	QRegularExpressionValidator * aeTitleValidator = new QRegularExpressionValidator(this);
+	aeTitleValidator->setRegularExpression(aeTitleRegex);
+    
 	m_pOurInfoWidget = new QWidget(this);
 	m_pOurInfoLayout = new QHBoxLayout(this);
 	m_pOurPortLabel = new QLabel(m_pOurInfoWidget);
 	m_pOurPortLabel->setText(tr("Listening port:"));
 	m_pOurInfoLayout->addWidget(m_pOurPortLabel);
 	m_pOurPortEdit = new QLineEdit(m_pOurInfoWidget);
+	m_pOurPortEdit->setValidator(portValidator);
 	m_pOurInfoLayout->addWidget(m_pOurPortEdit);
 	m_pOurTitleLabel = new QLabel(m_pOurInfoWidget);
 	m_pOurTitleLabel->setText(tr("Local AE title:"));
 	m_pOurInfoLayout->addWidget(m_pOurTitleLabel);
 	m_pOurTitleEdit = new QLineEdit(m_pOurInfoWidget);
+	m_pOurTitleEdit->setValidator(aeTitleValidator);
 	m_pOurInfoLayout->addWidget(m_pOurTitleEdit);
 	m_AdvancedSettingsButton = new QPushButton(m_pOurInfoWidget);
 	m_AdvancedSettingsButton->setText(tr("Advanced settings"));
@@ -162,10 +175,13 @@ void ConfigurationDialog::initUi()
 	m_pEditLayout->addWidget(m_pPeerDescritopnLabel, 0, 6, 1, 5);
 
 	m_pPeerIpAddressEdit = new QLineEdit(m_pEditWidget);
+	m_pPeerIpAddressEdit->setValidator(ipValidator);
 	m_pEditLayout->addWidget(m_pPeerIpAddressEdit, 1, 0, 1, 3);
 	m_pPeerPortEdit = new QLineEdit(m_pEditWidget);
+	m_pPeerPortEdit->setValidator(portValidator);
 	m_pEditLayout->addWidget(m_pPeerPortEdit, 1, 3, 1, 1);
 	m_pPeerTitleEdit = new QLineEdit(m_pEditWidget);
+	m_pPeerTitleEdit->setValidator(aeTitleValidator);
 	m_pEditLayout->addWidget(m_pPeerTitleEdit, 1, 4, 1, 2);
 	m_pPeerDescriptionEdit = new QLineEdit(m_pEditWidget);
 	m_pEditLayout->addWidget(m_pPeerDescriptionEdit, 1, 6, 1, 3);
@@ -603,18 +619,6 @@ void ConfigurationDialog::changeHostProtocol()
 void ConfigurationDialog::pacsMenuRequest(QPoint pos)
 {
     auto index = m_pPacsInfo->indexAt(pos);
-    auto actions = m_pRetriveProtocolMenu->actions();
-    for(int i = 0; i < actions.count(); ++i)
-    {
-        if (actions.at(i)->text() == m_pPacsModel->item(index.row(),4)->text())
-        {
-            actions.at(i)->setChecked(true);
-        }
-        else
-        {
-            actions.at(i)->setChecked(false);
-        }
-    }
     m_pPacsMenu->exec(QCursor::pos());
 }