diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index f3340c7..4198d46 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -725,10 +725,10 @@ void MainWindow::scanDevices()
     deviceScanner().start();
 }
 
-void MainWindow::on_m_DeviceScanner_progress(const QString& device_node, int percent)
+void MainWindow::on_m_DeviceScanner_progress(const QString& deviceNode, int percent)
 {
     scanProgressDialog().setProgress(percent);
-    scanProgressDialog().setDeviceName(device_node);
+    scanProgressDialog().setDeviceName(deviceNode);
 }
 
 void MainWindow::on_m_DeviceScanner_finished()
diff --git a/src/gui/volumegroupdialog.cpp b/src/gui/volumegroupdialog.cpp
index b5edf84..35e9702 100644
--- a/src/gui/volumegroupdialog.cpp
+++ b/src/gui/volumegroupdialog.cpp
@@ -75,7 +75,10 @@ VolumeGroupDialog::~VolumeGroupDialog()
 
 void VolumeGroupDialog::setupDialog()
 {
-    QRegularExpression re(QStringLiteral("[\\w-.+]+"));
+    /* LVM Volume group name can consists of: letters numbers _ . - +
+     * It cannot start with underscore _ and must not be equal to . or .. or any entry in /dev/
+     * QLineEdit accepts QValidator::Intermediate, so we just disable . at the beginning */
+    QRegularExpression re(QStringLiteral(R"(^(?!_|.)[\w\-.+]+)"));
     QRegularExpressionValidator *validator = new QRegularExpressionValidator(re, this);
     dialogWidget().vgName().setValidator(validator);
     dialogWidget().vgName().setText(targetName());