diff --git a/src/core/tandem_run/tandemparameters.cpp b/src/core/tandem_run/tandemparameters.cpp
index 2c4fec7ae36a144c8acb8b29e515637eeabd8980..bf20fc2fab53e6704131a49ed38352f5724c5a32 100644
--- a/src/core/tandem_run/tandemparameters.cpp
+++ b/src/core/tandem_run/tandemparameters.cpp
@@ -95,7 +95,7 @@ void TandemParameters::setParamLabelValue(const QString & label, const QString &
             throw pappso::ExceptionNotPossible(QObject::tr("%1 value must be Daltons or ppm (not %2)").arg(label).arg(value));
         }
     }
-    if (label == "spectrum, parent monoisotopic mass isotope error") {
+    if ((label == "spectrum, parent monoisotopic mass isotope error") || (label == "spectrum, use neutral loss window")) {
         if ((value != "yes") && (value != "no")) {
             throw pappso::ExceptionNotPossible(QObject::tr("%1 value must be yes or no (not %2)").arg(label).arg(value));
         }
diff --git a/src/gui/edit_tandem_preset_dialog/edit_tandem_preset_dialog.ui b/src/gui/edit_tandem_preset_dialog/edit_tandem_preset_dialog.ui
index 65f878f3019c111be5973e532551d5434ad26490..7fa19cbc7628748d28b0a9b115ddbfe616e99c0c 100644
--- a/src/gui/edit_tandem_preset_dialog/edit_tandem_preset_dialog.ui
+++ b/src/gui/edit_tandem_preset_dialog/edit_tandem_preset_dialog.ui
@@ -131,9 +131,9 @@
               <property name="geometry">
                <rect>
                 <x>0</x>
-                <y>-94</y>
-                <width>957</width>
-                <height>292</height>
+                <y>0</y>
+                <width>990</width>
+                <height>334</height>
                </rect>
               </property>
               <layout class="QVBoxLayout" name="verticalLayout_3">
@@ -267,6 +267,9 @@
                    </property>
                   </widget>
                  </item>
+                 <item row="1" column="1">
+                  <widget class="QLineEdit" name="parent_ion_lower_window_edit"/>
+                 </item>
                  <item row="2" column="0">
                   <widget class="QLabel" name="label_3">
                    <property name="text">
@@ -281,12 +284,23 @@
                    </property>
                   </widget>
                  </item>
-                 <item row="1" column="1">
-                  <widget class="QLineEdit" name="parent_ion_lower_window_edit"/>
-                 </item>
                  <item row="2" column="1">
                   <widget class="QLineEdit" name="parent_ion_upper_window_edit"/>
                  </item>
+                 <item row="6" column="1">
+                  <widget class="QComboBox" name="sfmmeu_combo_box">
+                   <item>
+                    <property name="text">
+                     <string>Daltons</string>
+                    </property>
+                   </item>
+                   <item>
+                    <property name="text">
+                     <string>ppm</string>
+                    </property>
+                   </item>
+                  </widget>
+                 </item>
                  <item row="5" column="0">
                   <widget class="QLabel" name="label_8">
                    <property name="text">
@@ -301,19 +315,8 @@
                    </property>
                   </widget>
                  </item>
-                 <item row="6" column="1">
-                  <widget class="QComboBox" name="sfmmeu_combo_box">
-                   <item>
-                    <property name="text">
-                     <string>Daltons</string>
-                    </property>
-                   </item>
-                   <item>
-                    <property name="text">
-                     <string>ppm</string>
-                    </property>
-                   </item>
-                  </widget>
+                 <item row="4" column="1">
+                  <widget class="QLineEdit" name="smpc_edit"/>
                  </item>
                  <item row="6" column="0">
                   <widget class="QLabel" name="label_9">
@@ -322,8 +325,8 @@
                    </property>
                   </widget>
                  </item>
-                 <item row="4" column="1">
-                  <widget class="QLineEdit" name="smpc_edit"/>
+                 <item row="7" column="1">
+                  <widget class="QLineEdit" name="sfmme_edit"/>
                  </item>
                  <item row="4" column="2">
                   <widget class="QPushButton" name="smpc_push_button">
@@ -339,9 +342,6 @@
                    </property>
                   </widget>
                  </item>
-                 <item row="7" column="1">
-                  <widget class="QLineEdit" name="sfmme_edit"/>
-                 </item>
                  <item row="7" column="0">
                   <widget class="QLabel" name="label_7">
                    <property name="text">
@@ -349,6 +349,34 @@
                    </property>
                   </widget>
                  </item>
+                 <item row="8" column="2">
+                  <widget class="QPushButton" name="sunlw_push_button">
+                   <property name="text">
+                    <string>?</string>
+                   </property>
+                  </widget>
+                 </item>
+                 <item row="8" column="1">
+                  <widget class="QComboBox" name="sunlw_combo_box">
+                   <item>
+                    <property name="text">
+                     <string>yes</string>
+                    </property>
+                   </item>
+                   <item>
+                    <property name="text">
+                     <string>no</string>
+                    </property>
+                   </item>
+                  </widget>
+                 </item>
+                 <item row="8" column="0">
+                  <widget class="QLabel" name="label_10">
+                   <property name="text">
+                    <string>Control the use of the neutral loss window</string>
+                   </property>
+                  </widget>
+                 </item>
                 </layout>
                </item>
                <item>
@@ -385,8 +413,8 @@
                <rect>
                 <x>0</x>
                 <y>0</y>
-                <width>971</width>
-                <height>198</height>
+                <width>990</width>
+                <height>334</height>
                </rect>
               </property>
               <layout class="QVBoxLayout" name="verticalLayout_6">
@@ -494,7 +522,7 @@
    <hints>
     <hint type="sourcelabel">
      <x>1343</x>
-     <y>620</y>
+     <y>654</y>
     </hint>
     <hint type="destinationlabel">
      <x>881</x>
@@ -510,7 +538,7 @@
    <hints>
     <hint type="sourcelabel">
      <x>1429</x>
-     <y>620</y>
+     <y>654</y>
     </hint>
     <hint type="destinationlabel">
      <x>879</x>
@@ -541,8 +569,8 @@
    <slot>doSave()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>1011</x>
-     <y>249</y>
+     <x>1030</x>
+     <y>181</y>
     </hint>
     <hint type="destinationlabel">
      <x>1542</x>
@@ -605,8 +633,8 @@
    <slot>doCopy()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>925</x>
-     <y>249</y>
+     <x>944</x>
+     <y>181</y>
     </hint>
     <hint type="destinationlabel">
      <x>707</x>
@@ -637,8 +665,8 @@
    <slot>doEdit(QString)</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>889</x>
-     <y>269</y>
+     <x>923</x>
+     <y>302</y>
     </hint>
     <hint type="destinationlabel">
      <x>464</x>
@@ -686,7 +714,7 @@
    <hints>
     <hint type="sourcelabel">
      <x>1313</x>
-     <y>136</y>
+     <y>102</y>
     </hint>
     <hint type="destinationlabel">
      <x>1737</x>
@@ -702,7 +730,7 @@
    <hints>
     <hint type="sourcelabel">
      <x>1430</x>
-     <y>136</y>
+     <y>102</y>
     </hint>
     <hint type="destinationlabel">
      <x>1796</x>
@@ -717,8 +745,8 @@
    <slot>doHelp()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>940</x>
-     <y>366</y>
+     <x>1009</x>
+     <y>404</y>
     </hint>
     <hint type="destinationlabel">
      <x>1209</x>
@@ -733,8 +761,8 @@
    <slot>doHelp()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>917</x>
-     <y>400</y>
+     <x>1009</x>
+     <y>438</y>
     </hint>
     <hint type="destinationlabel">
      <x>1247</x>
@@ -749,8 +777,8 @@
    <slot>doHelp()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>909</x>
-     <y>432</y>
+     <x>1009</x>
+     <y>472</y>
     </hint>
     <hint type="destinationlabel">
      <x>1142</x>
@@ -765,8 +793,8 @@
    <slot>doHelp()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>944</x>
-     <y>469</y>
+     <x>1009</x>
+     <y>506</y>
     </hint>
     <hint type="destinationlabel">
      <x>1322</x>
@@ -774,6 +802,22 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>sunlw_push_button</sender>
+   <signal>clicked()</signal>
+   <receiver>EditTandemPresetView</receiver>
+   <slot>doHelp()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>951</x>
+     <y>529</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>1259</x>
+     <y>628</y>
+    </hint>
+   </hints>
+  </connection>
  </connections>
  <slots>
   <slot>doCopy()</slot>
diff --git a/src/gui/edit_tandem_preset_dialog/edittandempresetdialog.cpp b/src/gui/edit_tandem_preset_dialog/edittandempresetdialog.cpp
index f3219f9cea4f39e6df9c6f5159dac40bb24a0a5a..9b43b6a30b714eb01b7804010506ba95fc0b96d7 100644
--- a/src/gui/edit_tandem_preset_dialog/edittandempresetdialog.cpp
+++ b/src/gui/edit_tandem_preset_dialog/edittandempresetdialog.cpp
@@ -209,6 +209,10 @@ void EditTandemPresetDialog::doHelp() {
     {
         html_doc.setFileName(":/tandem/resources/html_doc/sfmme.html");
     }
+    if(senderObjName == "sunlw_push_button")
+    {
+        html_doc.setFileName(":/tandem/resources/html_doc/sunlw.html");
+    }
 
 
     if (html_doc.open(QFile::ReadOnly | QFile::Text)) {
@@ -239,6 +243,8 @@ void EditTandemPresetDialog::readUi() {
 
         _tandem_params.setParamLabelValue("spectrum, fragment monoisotopic mass error units", ui->sfmmeu_combo_box->currentText());
         _tandem_params.setParamLabelValue("spectrum, fragment monoisotopic mass error", ui->sfmme_edit->text());
+        _tandem_params.setParamLabelValue("spectrum, use neutral loss window", ui->sunlw_combo_box->currentText());
+    
     }
     catch (pappso::PappsoException & error) {
         QMessageBox::warning(this,tr("Error in parameters :"), error.qwhat());
@@ -283,6 +289,12 @@ void EditTandemPresetDialog::populate() {
     //<note type="input" label="spectrum, fragment monoisotopic mass error">0.02</note>
     ui->sfmme_edit->setText(_tandem_params.getValue("spectrum, fragment monoisotopic mass error"));
 
+    
+  //<note type="input" label="spectrum, use neutral loss window">yes</note>
+    index = ui->sunlw_combo_box->findText(_tandem_params.getValue("spectrum, use neutral loss window"));
+    if ( index != -1 ) { // -1 for not found
+        ui->sunlw_combo_box->setCurrentIndex(index);
+    }
     qDebug() << "EditTandemPresetDialog::populate end";
 }