diff --git a/src/gui/peptide_list_view/peptidetableproxymodel.cpp b/src/gui/peptide_list_view/peptidetableproxymodel.cpp
index 9c04466e25ef10e217d78143c2457c9b76209880..2fa5f884fc28299001f7f6216d1e0d354742e7a3 100644
--- a/src/gui/peptide_list_view/peptidetableproxymodel.cpp
+++ b/src/gui/peptide_list_view/peptidetableproxymodel.cpp
@@ -245,4 +245,6 @@ void PeptideTableProxyModel::setPeptideListColumnDisplay(PeptideListColumn colum
     settings.setValue(QString("peptide_list_columns/%1").arg(_peptide_table_model_p->getTitle(column)),toggled);
     _column_display[(std::int8_t) column] = toggled;
     endResetModel();
+    
+    //emit columnsRemoved(createIndex(1, 2), (int) column, (int) column)
 }
diff --git a/src/gui/xic_view/xic_box/xic_box.ui b/src/gui/xic_view/xic_box/xic_box.ui
index 832313de2bf429dbbcdb4f0662827325d6804e6c..72ac3b9b0b4dfde389516bc158a45a921fa8f2cf 100644
--- a/src/gui/xic_view/xic_box/xic_box.ui
+++ b/src/gui/xic_view/xic_box/xic_box.ui
@@ -191,7 +191,7 @@
       <item>
        <widget class="QLabel" name="rt_label">
         <property name="text">
-         <string>TextLabel</string>
+         <string/>
         </property>
        </widget>
       </item>
diff --git a/src/gui/xic_view/xic_box/xicbox.cpp b/src/gui/xic_view/xic_box/xicbox.cpp
index 4eb3cfd8744513e99615ed4fd54d4b358f0d8a4d..172ebf1e983be3cfa2b20ee0b1f4dc8cdc60b659 100644
--- a/src/gui/xic_view/xic_box/xicbox.cpp
+++ b/src/gui/xic_view/xic_box/xicbox.cpp
@@ -94,6 +94,13 @@ XicBox::XicBox(XicWindow *parent):
     //ui->xic_list_widget->setLayout(new QVBoxLayout(ui->xic_list_widget));
     ui->histo_widget->legend->setVisible(true);
 
+    if (_p_xic_window->isRetentionTimeSeconds()) {
+        ui->xic_widget->setRetentionTimeInSeconds();
+    }
+    else {
+        ui->xic_widget->setRetentionTimeInMinutes();
+    }
+
 #if QT_VERSION >= 0x050000
     // Qt5 code
     connect(this, &XicBox::loadXic, p_worker, &XicWorkerThread::doXicLoad);
@@ -106,6 +113,8 @@ XicBox::XicBox(XicWindow *parent):
 
     connect(_p_xic_window, &XicWindow::reExtractXicNeeded,this, &XicBox::reExtractXic);
     connect(ui->xic_widget, &pappso::XicWidget::xicPeakListChanged,this, &XicBox::setXicPeakList);
+
+    connect(_p_xic_window, &XicWindow::rtUnitChangeNeeded,this, &XicBox::onRtUnitChanged);
 #else
 // Qt4 code
 #endif
@@ -231,7 +240,7 @@ void XicBox::setXic(std::vector< pappso::XicSp> xic_sp_list) {
     _xic_peak_match_list.clear();
     XicDetectionList xic_list;
     xic_list.setPeptideEvidenceList(_peptide_evidence_list);
-    
+
 
     for (int i=0; i < xic_sp_list.size(); i++) {
         try {
@@ -359,7 +368,7 @@ void XicBox::reExtractXic() {
 
 void XicBox::setRetentionTime(double rt) {
     qDebug() << "XicBox::setRetentionTime begin";
-    ui->rt_label->setText(tr("rt=%1").arg(rt));
+    ui->rt_label->setText(tr("rt=%1 (sec) rt=%2 (min)").arg(rt).arg(rt/60));
 }
 void XicBox::setXicPeakList(std::vector<std::pair<pappso::XicSp, pappso::XicPeakSp>> xic_peak_list) {
     qDebug() << "XicBox::setXicPeakList begin";
@@ -368,9 +377,9 @@ void XicBox::setXicPeakList(std::vector<std::pair<pappso::XicSp, pappso::XicPeak
 
     for (std::pair<pappso::XicSp, pappso::XicPeakSp> & pair_xic_peak: xic_peak_list) {
         html.append(tr("<p>%1<br/>area: %2<br/>rt begin: %3<br/>rt max: %4<br/>rt end: %5<br/></p>").arg(ui->xic_widget->getName(pair_xic_peak.first.get())).arg(pair_xic_peak.second.get()->getArea()).arg(pair_xic_peak.second.get()->getLeftBoundary().rt)
-            .arg(pair_xic_peak.second.get()->getMaxXicElement().rt)
-            .arg(pair_xic_peak.second.get()->getRightBoundary().rt)
-        );
+                    .arg(pair_xic_peak.second.get()->getMaxXicElement().rt)
+                    .arg(pair_xic_peak.second.get()->getRightBoundary().rt)
+                   );
     }
 
     ui->xic_widget->setToolTip(html);
@@ -384,3 +393,13 @@ void XicBox::setXicPeakList(std::vector<std::pair<pappso::XicSp, pappso::XicPeak
 
 
 }
+
+
+void XicBox::onRtUnitChanged() {
+    if (_p_xic_window->isRetentionTimeSeconds()) {
+        ui->xic_widget->setRetentionTimeInSeconds();
+    }
+    else {
+        ui->xic_widget->setRetentionTimeInMinutes();
+    }
+}
diff --git a/src/gui/xic_view/xic_box/xicbox.h b/src/gui/xic_view/xic_box/xicbox.h
index 3af3481d027bf55c9b1b81777551cc0fae20aa4d..4e43a6b272e054a433e7baefc503f8a60d6e80d1 100644
--- a/src/gui/xic_view/xic_box/xicbox.h
+++ b/src/gui/xic_view/xic_box/xicbox.h
@@ -65,6 +65,7 @@ private slots:
     void extractXicInOtherMsRun();
     void setRetentionTime(double rt);
     void setXicPeakList(std::vector<std::pair<pappso::XicSp, pappso::XicPeakSp>> xic_peak_list);
+    void onRtUnitChanged();
 
 private:
     Ui::XicBox *ui;
diff --git a/src/gui/xic_view/xic_window.ui b/src/gui/xic_view/xic_window.ui
index 002ace2f24c9459ab3573681ba903b762a7a5f3d..6f01750e3f92edfae081c50177fc7b7bc4c1e018 100644
--- a/src/gui/xic_view/xic_window.ui
+++ b/src/gui/xic_view/xic_window.ui
@@ -19,7 +19,7 @@
      <widget class="QWidget" name="widget" native="true">
       <layout class="QHBoxLayout" name="horizontalLayout">
        <property name="spacing">
-        <number>0</number>
+        <number>5</number>
        </property>
        <property name="leftMargin">
         <number>0</number>
@@ -43,6 +43,29 @@
        <item>
         <widget class="pappso::PrecisionWidget" name="xic_precision" native="true"/>
        </item>
+       <item>
+        <widget class="QRadioButton" name="rt_sec_radiobutton">
+         <property name="text">
+          <string>&amp;rt in seconds</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
+         </property>
+         <attribute name="buttonGroup">
+          <string notr="true">rt_unit_buttongroup</string>
+         </attribute>
+        </widget>
+       </item>
+       <item>
+        <widget class="QRadioButton" name="rt_min_radiobutton">
+         <property name="text">
+          <string>rt in &amp;minutes</string>
+         </property>
+         <attribute name="buttonGroup">
+          <string notr="true">rt_unit_buttongroup</string>
+         </attribute>
+        </widget>
+       </item>
        <item>
         <spacer name="horizontalSpacer">
          <property name="orientation">
@@ -70,7 +93,7 @@
          <x>0</x>
          <y>0</y>
          <width>780</width>
-         <height>504</height>
+         <height>498</height>
         </rect>
        </property>
        <layout class="QVBoxLayout" name="verticalLayout"/>
@@ -120,8 +143,28 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>rt_unit_buttongroup</sender>
+   <signal>buttonClicked(QAbstractButton*)</signal>
+   <receiver>XicWindow</receiver>
+   <slot>rtUnitChanged(QAbstractButton*)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>-1</x>
+     <y>-1</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>399</x>
+     <y>299</y>
+    </hint>
+   </hints>
+  </connection>
  </connections>
  <slots>
   <slot>xicPrecisionChanged(pappso::PrecisionP)</slot>
+  <slot>rtUnitChanged(QAbstractButton*)</slot>
  </slots>
+ <buttongroups>
+  <buttongroup name="rt_unit_buttongroup"/>
+ </buttongroups>
 </ui>
diff --git a/src/gui/xic_view/xicwindow.cpp b/src/gui/xic_view/xicwindow.cpp
index fc3be0a73fa47a3ce0b382180781f703e96d395f..3c0fe147eb828edda6efa05741a9b4adf5fa9d1c 100644
--- a/src/gui/xic_view/xicwindow.cpp
+++ b/src/gui/xic_view/xicwindow.cpp
@@ -111,3 +111,16 @@ void XicWindow::xicPrecisionChanged(pappso::PrecisionP precision) {
 void XicWindow::xicDetect(const pappso::Xic & xic,pappso::XicDetectionSinkInterface * sink) const {
     _detect_zivy.detect(xic, sink);
 }
+
+void XicWindow::rtUnitChanged(QAbstractButton* button) {
+    qDebug() << "XicWindow::rtUnitChanged begin";
+    emit rtUnitChangeNeeded();
+    qDebug() << "XicWindow::rtUnitChanged end";
+}
+
+bool XicWindow::isRetentionTimeSeconds() const {
+    if (ui->rt_sec_radiobutton->isChecked()) {
+        return true;
+    }
+    return false;
+}
diff --git a/src/gui/xic_view/xicwindow.h b/src/gui/xic_view/xicwindow.h
index 9f36713f409fff1b84dca63e4fec8950654ca810..6d0bd3d76f9fab7867aba3bf7c1fb48c69619d62 100644
--- a/src/gui/xic_view/xicwindow.h
+++ b/src/gui/xic_view/xicwindow.h
@@ -30,6 +30,7 @@
 #define XICWINDOW_H
 
 #include <QMainWindow>
+#include <QAbstractButton>
 #include <pappsomspp/xic/xic.h>
 #include <pappsomspp/xic/detection/xicdetectionzivy.h>
 
@@ -57,13 +58,17 @@ public:
     void addXicInMsRun(const PeptideEvidence * p_peptide_evidence, MsRunSp msrun_sp);
 
     pappso::PrecisionP getXicExtractPrecision() const;
+    
+    bool isRetentionTimeSeconds() const;
 
     void clear();
 public slots:
     void xicPrecisionChanged(pappso::PrecisionP precision);
+    void rtUnitChanged(QAbstractButton* button);
     
 signals :
     void reExtractXicNeeded();
+    void rtUnitChangeNeeded();
 
 
 protected: