diff --git a/settingsdialog.cpp b/settingsdialog.cpp
index 2a43906..89c1efd 100644
--- a/settingsdialog.cpp
+++ b/settingsdialog.cpp
@@ -89,8 +89,8 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent)
     m_bestFit->setToolTip(tr("Set Best Fit zoom level when opening new image."));
     m_bestFit->setChecked(BESTFIT);
 
-
     m_headerHighlight = new QListWidget(this);
+    m_headerHighlight->setToolTip(tr("List of FITS keywords that will be highlighted in Image info"));
     for(auto i = headerHighlight.begin(); i != headerHighlight.end(); i++)
     {
         QListWidgetItem *item = new QListWidgetItem(m_headerHighlight);
@@ -98,6 +98,7 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent)
         item->setBackground(i.value());
     }
     m_keyword = new QLineEdit(this);
+    m_keyword->setPlaceholderText(tr("FITS keyword"));
     QPushButton *color = new QPushButton(this);
     QPixmap pix(16, 16);
     pix.fill(m_color);
@@ -136,6 +137,7 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent)
     layout->addRow(m_qualityThumbnail);
     layout->addRow(m_useNativeDialog);
     layout->addRow(m_bestFit);
+    layout->addRow(new QLabel(tr("FITS header highlight"), this));
     layout->addRow(m_headerHighlight);
     layout->addRow(m_keyword, color);
     layout->addRow(add, remove);